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5 Most common Flat Screen TV Repairs.

     We begin a series of the most common TV repairs based on our latest repairs, we also may answer your questions  regarding your TV problem, you may email your question along with model number and also  what's exactly wrong with your TV, such as: TV won't come on, or TV comes on and shuts off, or no picture but there is sound, etc. You may ask questions regarding any of those kind of TVs: CRT TVs, Rear Projections TVs, DLP TVs, Plasma TVs, LCD/LED TVs, LED TVs, or any newer TVs, we will try answer your questions in timely manner, depends on workload, or you can call us anytime: 918-2640116, ask for Joe.

 1.LED  strips failure.                                                 03.26.20

  LED strip failure is the most common problem today. Even though LED TVs have been around since late 70's, they started coming for repairs in about six to eight years, after Plasma TVs got older and people started replacing heavy plasma TVs for lighter and less power consuming and very often larger LED TVs.

   Among other flaws, LED strips failures start to  show up in about two ( or little sooner sometimes ) years of usage, and with longer hours of being on, TV start failing even sooner.

   First signs of LED strips stating to fail, some shadows may start to appear while TV is on, and the size of the shadow normally depends on how many LED lights are dead. Normally there 6 to 8 LED lights on each strip, and about 6 to 8 strips on the left side and the same amount of the strips on the right side. The more lights are failing- the bigger shadow on the screen when TV is on. 

   Normally shadows are very common on VIZIO TVs, and shadows are almost never shows up on Samsung TVs, normally whole screen turns black. 

    However, LED strips failure may not be so obvious, sometimes the whole TV  goes to shutdown, and the only thing is on - red light blinks, and sometimes TV comes on just fine, and there is audio and very faint picture may show if to use a flashlight.

   It is relatively easy to replace LED strips, however it may take up to 2 to 3 hours, depends on the brand and the size of the TV. Word of caution : removing panel would require utmost caution, removing panel may cause a damage which will result in replacing a whole TV, because panels are not repairable, and the price of the panel is about 80% of the price of the whole TV.

   And one more thing, LED strips are not interchangeable, they go by very specific part number, they should be replaced all at once with a set of a brand new ones, no "look the same", or "kinda close''. only exactly the same part number. For example for Samsung TV, model number UN60FH6200FXZA,  version HH01, LED strip part number would be BN96-29074A/BN96-29075A.

    After LED strips are replaced  - It may last the same life span,providing TV is plugged in into power surge protector, and back light and brightness are adjusted to 50%, because running back light  and brightness on max will significantly shorten life span of the TV.

And the last, keeping the back light ( on some TVs there is no  back light  controls ) or brightness in the middle may prolong life of the TV. 

    So, replacing LED strips is a worthwhile procedure and normally cost a fraction of the new TV and could make it last for another 2 to 4 years ( depends on the model, size and usage ). 

    If you may have questions , call us @ 918-2640116. Joe

2. Main Board failures.                                            03.26.20

Main Board failures may not be so obvious like for example LED strip failure, however here some most common problems with Main Board:

1. No power, TV won't respond at all, even stand by light is off,

2. TV comes on, and shuts off.

3. TV comes on, has good audio and good video, but after while ( 15-20 min) TV gas high-pitching noise and picture get distorted,

4. TV comes on, has good audio but no video,

5. TV works fine except won't work with remote, 

6 TV works good for 15-20 min, then switches from one input to another ( for example from HDMI1 to HDMI2) by itself,

7.TV has great video, but there is no audio

There are many more symptoms which could be caused by Main Board, but those are the most common, and I will discuss few of them here briefly. 

   First one, no power. Very often it may look like it is a Power Supply's failure, but simple one touch measurement +5V  ( sometimes it is +3.3V) may tell you it all: if there is no +5V, then disconnect connector from the Main Board and check it again and if there is +5V, then obviously defective Main Board brought it down, and of course once Main Board is replaced TV comes on.

   If TV won't operate with Remote Control it may sound like it is IF board is defective, and sometimes it is, but Main Board does cause this problem too.

   Very often intermittent problems are caused by cold solder, which happens with older TVs, And one of the very common problems was capacitor failures. It was very common about ten years ago, nowdays it's almost never happens. And, once I mentioned capacitors failures - I'll take a moment to say a few words about defective caps. First: Suspected capacitors could be measured with Capacitor meters, there are many kinds of them on the market today and they are easy to use, however, if  there is no meters around, then bad capacitors definitely look different then good caps: bad caps SOMETIMES have bulging tops , that's why it is good to have a meter to check it, but a cap with bulged to is ALWAYS bad.  Another reason for intermittent main board failure is  internal breaks in SMD components. To replace SMD normally require good soldering skills, I highly recommend to ask a professional to troubleshoot and complete the repair,and if you have any doubts and not sure what's going all - it could be a time to call professional, call us @ 918-264011 and we're just a phone call away!

3.Power Supply failures.       03.27.20

Power Supply failures sometimes are really easy to troubleshoot and sometimes it may be not so obvious. Most common symptoms of failed Power Supply are:

   The set is dead, no response  whatsoever,

   TV comes on and shuts off intermittent,

   TV comes on and has good audio, but there is no video and the screen is black. 

     The first symptom is obvious and doesn't need a lot of troubleshooting, and everybody would check the AC fuse ( in this case it would be FP801S, 5A/250V), and if it is blown, obviously it need to be replaced with a fuse of the same value, and if TV comes on then that's all to it, it's done.

If replaced fuse got blown right away, the most common reason could be QP801CS, I've seen it quite a  few times. 

   Intermittent problems normally are caused by cold solder, normally due to the age ( I mentioned it in previous newsletter), and capacitors issue almost uncommon today, that was quite an issue five -ten years ago. 

   If TV comes on, has good audio but screen is black, then is is could be a Power Supply problem, and the reason for that could a diode  D9001C, and missing voltage for LED strips could may it look like it is LED strips are defective, but the problem was a Power Supply. 

   And, of course, there are more symptoms of a bad Power Supply, but those are the most common which could be found in everyday TV service and repair.

   And again, TV repair require a lot of experience and professional training, and if your NOT a PROFESSIONAL TECHNICIAN - you're doing it at your own risk, We strongly advice call for professional help, you may call to local repair shop, or just call us, we can do it . Or you can call us always if you got a question @ 918-2640116, Joe.

4.T-Con Board failures                                                           03.27.20

 T-Con Board failures may not be so obvious as LED strips failures or Power Supply failures, however, here are some most typical problems which may be caused by T-Con boards:

   No picture, sound is fine.

   Lines, sound is good.

   TV won't come at all.  

   Half screen picture is fine, half screen - no picture, and other problems.

The easiest way to confirm if the T-Con board if defective is to replace it with a new one, some T-Con Bards are repairable, and there are some repair kits to repair T-Con Boards, except soldering skills required, and replace the board (like any other) possible only with the same board, and exactly with the same part number. And also, when T-Con is replaced, flexible ribbon cables may need to be attached properly, improper connection may cause is loss of picture or distorted picture. Once T-Con Board replaced, it doesn't required any adjustments or programming. New T-Con Board may last for another years, providing the panel is not defective. It was a common problem with 70" VIZIO: once T-Con replaced - TV comes fine, but few seconds later T-Con fails, and the reason was - defective panel.

   Those were the most common T-Con failures, and of course there many more, and like always, if you would have any questions give us a call @ 918-2640116. Joe.

5.Remote control won't work.                                                  03.30.20    

    This is also a common problem with the TV - it won't respond to any remote command.

In this case we need to see if it is the remote control that doesn't work, or it is the TV itself.

So, after the battery has been replaced, and TV still won't respond to the remote, you may need to test the remote (see the picture next to this article), I will explain the picture:

   Aim the remote to your cell phone (cell phone should be in camera mode), and press and hold Power button on the remote - and you supposed to see a series of flashes in your phone screen - and that tells you that your remote is in good condition and nothing wrong with it, and the problem is with a the TV.

   There are two boards which are responsible for the TV responding to the remote control commands: IR Receiver Board and Main Board.

    Main and the most often failing component in the IR receiver Board is Infrared IR receiver crystal, and it could be easily replaced, it is only 3 pin component, and there are only a few components on that board which is really easy to troubleshoot. So, if the crystal (or the whole IR Receiver Board) is replaced, and the TV still won't respond to the remote - the only thing left to troubleshoot is the Main Board.

   As I mentioned above, mostly the IR Board is responsible for this type of a problem, and consequently Main Board almost never cause remote control problems, but it still happens. In this case repair on component level  will require a high level of experience in electronics repair, and in this case it need to be professionally troubleshooted and repaired or the whole Main board need to be replaced. And before you order part, make sure you have Model number and the PART number then you can order it. But the main board is a one of the most expensive boards in the TV, so before you order it, consider this: How old is the TV, what's the size of the screen, and how does picture look on this TV?

   And here is a brief summary of everything previously mentioned:

1.If battery replaced and it didn't help, then

2.After you checked  your remote with  the camera and see flashing light on the camera ( obviously if there is no flashing lights  - then remote needs to be replaced),  then 

3. You replaced the IR crystal ( or the whole board) and it still didn't help, then

4. Main board need to be replaced.

   First two steps could be done easily by anyone, the latter two should be done by experienced technician. 

   And if you still have any questions regarding this issue or any other issue with your  TV - we are just a phone call away, or just feel up our CONTACT form and we will get back to you as soon as possible. 


Most repaired TVs.                                                          03.31.20

   Today we begin an overview of the most repaired TVs. With an experience well over 40 years I can look back and see how it's developed form a small black and white TV then to ultra modern OLED TV today.

   In this article I am not planing to talk about 25-30 years old CRT  (Cathode Ray  Tube) TVs for simple reason: they are mostly gone (we get only one or two calls per month or so  for those TVs lately), neither I am going to talk about Rear Projection TVs  (Front Projection TVs were also in circulation but not as long as a Rear Projection TV by now means) for  the same reasons: we almost  never get calls for those TVs, so I assume that those two classes  of TVs are almost gone.

   Next class would be DLP TVs.Those TVs are still in circulation for a good reasons: They are low maintenance (mostly just a lamp need to be replaced and TV is good for another few years). DLP TVs have great sound (in many cases better than today's LED TVs have),  They (DLP TVs) could have a huge screen size (even for today's standards) 73" or even 83" They are not as heavy as the CRT TVs used to be, so it was relatively easy to move it if needed.

   Next class would be Plasma TVs. They are still around and people are planning to have them for a while. I am not talking about the very first ones (Pioneer, RCA TVs), but mostly Samsung Plasma TVs, LG and other brands. Plasma TVs have definitely great  picture, good sound (with speakers facing forward, unlike some LED TVs) and come with good screen sizes.There are few disadvantages for plasma TVs: they are relatively heavy, higher power consumption and few more.

    The next class would be LCD TVs. From outside they may look like Plasma TVs ( but a lot lighter) and less power consumption. They also have a good picture and sound, easy to move around the house and came with a relatively big screen size (up to 60"). We don't get a lot of calls for those LCD TVs lately.

   Next class would be LED TVs, and that's would be the class of TVs we get most of the calls every single day. We are gonna go into details what is the brand we're getting most of the calls, and what is the brand we're getting the least calls.

   Before I will go into specifics, I would like to specify, even though I think it is not very important, I am gonna be talking TV repair in Tulsa OK, even though it may differ a bit in a different regions or states, not by much though.

   I am gonna be talking about the most repaired TVs for the last two to three years. Also, I want to make it clear from the start, most repaired TVs - it is just most repaired TVs, they are not the worst quality TVs. I think some of the TVs (Samsung Flat Screen TVs, for example) were  sold in  such a  big numbers, so if a small fraction of them end up in TV repair, it is just because they sold a whole lot of them. 

   1. VIZIO LED Flat Screen TV. The most often repaired are the  VIZIO LED TVs, and the most often repaired would be 50" to 55" VIZIO LED TVs. The average lifespan for those TVs are two to three years before they fail first time, normally they are easily repairable.With us most of the repairs are done in home TV repair. In some cases, like backlight repair, we may need to pick it up, because the whole process of LED strips replacement may take up to two to three hours, depends on a model. Bigger VIZIO LED TVs ( 60" to 65") have mostly similar problems, however bigger screen models ( 70'') in addition to previously mentioned issues may have panel failures issues, which makes repair absolutely beyond any economical repair. In conclusion, FLat Screen LED VIZIO TVs are good TVs, they have a great picture and sound, WI-FI capability and they last up to two to three years and they are reasonably priced. 

   2.LG LED TVs. LG Flat Screen TVs are good for the same two to four years, in some cases they do last longer, but like in every brand -LG brand has models  that last longer and there are models that last not as long. This brand (LG) has pretty much the same or comparable specs as other brands. Due to a limited amount of hours of LED strips  bulbs LG has similar issues with a backlight. So, in conclusion LG Flat Screen LED TVs have similar set of faults as other brands,   but somehow we have less calls for LG LED TVs then VIZIO Flat Screen LED TVs.

   3. Samsung LED Flat Screen TV. A fraction of all of our repairs is Samsung Flat Screen TV repair, since we do in home TV repair, then most of the repairs done in customers homes. Also that fact that unnecessary moving TV from place to place (from room to room, or from home to the repair shop and back) may cause panel damage which makes it beyond economical repair. Since we specialize in Samsung Flat Screen TV repair, and we get calls not only from Tulsa Greater area, but from surrounding areas for Samsung LED TV  repair. And, personally, I think Samsung is a great brand and very reliable, but since it is sold in such huge numbers plus we get calls not locally only, but from surrounding areas: Broken Arrow , Bixby, Jenks and lot more, and that seems to be a reason for such big number for Samsung Flat Screen TV repair, and like I said already, most of them are fixed in customers houses. In addition to all the common  problems mentioned above for other two brands, Samsung TV may have a specific problem with "all in one" box, sometimes that box is repairable, sometimes it should be replaced since it's not so expensive. Samsung LED TV also has a great advantage over the other brands: Panel failure for Samsung TV is a lot lower compare to other brands. In conclusion, when it comes to Samsung TV repair - is always reasonably priced and repairable ( providing that the TV is not so old and parts are still available).

   And in conclusion of this overview I would like to mention something that most of the LED/OLED TV already may know: LED panes ( screens) could be easily damaged and that makes it absolutely beyond economical repair, so as long as your TV's screen is not cracked -most likely it's repairable. And one more thing you could do for your TV to avoid unnecessary repairs - keep your TV plugged in into Power Surge Protector, it will rectify power spikes making it safer for TV. 


TV Repair Cases.                                                                                    04.07.20 

   Today we begin a new series of the repair cases and  it's gonna be the newer models, LED FLat Screen TVs, we may see  the other types of TVs, such as: Plasma, DLP, LCD, and may be repair projection TV if we will get requests for this kind of TVs. 

   So, we begin with a Flat Screen LED TVs, and because we specialize in Samsung LED Flat Screen TVs and SONY OLED/LED TVs, that's why most of the repairs will be either Samsung or SONY brands, of course it could be some other brands.    

And before we begin with a repair cases, I would like to cover one of the most often case - Cracked LED Screen. We calls regarding cracked screens every single day, few times a day. Unfortunately - no warranty ( neither manufactory nor store warranty) will cover cracked screen, so if your TV is less then a day old ( you just brought home from the store) or just a few days old - it's your TV now. And regardless of the size of the screen, even if it is 75'' or bigger TV, IT IS cheaper to buy a whole new TV rather then try to replace the panel, and that's why mowing  and handling TVs should should be done with utmost caution and care. And once the TV placed in the place it's gonna be, then it would be a good idea no toys "flying" near the screen, most of the reasons we got a cracked screen calls - either remote "flew" wrong way or a baby toys flew to far.. The large Flat Screens TV are still expensive, and screen could be cracked very easily, so that's why of the reasons we make housecalls and do in home Flat Screen TV repair.

VIZIO LED TV 65"                                                             04.08.20          

We got 65" LED Flat Screen TV VIZIO, model number E65-C3, with a very common symptom: TV won't come on, but whit light on the bottom comes on, however TV won't respond neither to the remote nor to control panel ( on the back of the TV) and there is no faint picture even if the flashlight used - so TV simply won't respond, but the AC power comes in. 

   So, from here we know: there is AC is coming in, and after the main board was disconnected the B+ line is good, and when the main board connected then B+ goes down, which means that main board is defective and need to be replaced. Main board should be

replaced with exactly the same one, and when placing the order - the model number and the serial number  ( also part number of the board itself) will be needed. NEVER replace the main board just by   the model number ( because there are few different part numbers could be for the same model number). And the main board is replaced, TV normally comes on, and no adjustments are needed. Main board failures normally caused by a power surges and to prevent this from happening again TV should be plugged in into a Power Surge Protector. 

   And in conclusion, this model normally last between three and five years, and has a good picture and sound, and once it's fixed it could be good for another few years unless LED strips begin to fail, but this is also quite repairable, but about this issue we will talk in another post.                                         Joe. 

How long do TVs last ?                                                                                       04.09.20    

   In this overview I will talk about lifespan of different types of TVs. I still remember older box CRT ( Cathode Ray Tube) TVs, and a process of about of 40 -45 years to evolve into such a great TVs (it stands for a reason why the they call it a theater nowdays), with a perfect picture and rich sound ( newer LED TVs don't have that great sound, but it could be easily fixed by adding a surround sound or just a sound bar. And, of course, those LED TVs didn't evolved from CRT TVs, it took years and many types of TVs: Large Tube CRT TVs, Rear Projection TV ( Front Projection TVs weren't long in circulation), Plasma TVs, DLP TVs, LCD TVs, LED TVs, and finally OLED TVs!

    I will briefly summarize pros and cons of all those types of TVs and spend more time on the current LED TVs. 

    CRT  TVs.   I started to work with consumer electronics ( TVs and Radios) in the mid 70s, a little bit over 40 years ago. I've seen black and white TVs and color TVs with a smaller screens. In the mid 80s color TVs became more available, smaller screens, as 17" and 19", eventually 27" TVs became very popular. Picture was reasonably good. In the mid 90s more and more Big Tube CRT TVs became available- 35" and even 40", Mitsubishi was one of the brands making 40" TVs. Most of the repairs of CRT TVs were reasonably priced. Very common were vertical deflection repairs (LA7837/LA7838 Vertical output ICs,), High Voltage failures ( Flyback and Horizontal Output Transistor) and other repairs, but those were the most common. All repairs were done on component level, and as long as it wasn't CRT Tube - repair was always justified, and CRT " - screen" could last up to 25 years, so those bulky and heavy TVs used to last up to 25 years  

    Rear Projection TVs.    Mainly it was RCA, Mitsubishi, Philips. Very often it was wooden boxed TVs, looking like a piece of furniture, sometimes with a folding doors in front of the screen. With a screen ration of 3/4 the size of the TV looked huge, even though the screen size was 65" - 70". Sound was great too, about 12" speakers and wooden cabinet made sound really rich. The most expensive parts in this type of the TV -were CRT tubes ("guns"): blur, red and green. This type of the TV used to last less then previous type, the CRT,  - it could last up to 20 years, but before that it could be repaired at least once or twice or even more, but it worth it - good picture and theatrical sound made it all worth it. They (Rear Projection TVs) were huge and bulky, but very often they had a small wheels which made it easier to move it. Few words about Front Projection TVs  - they weren't around as long as Rear Projection TVs. 

     Plasma TVs. I remember first Plasma TVs, for example Pioneer TVs, RCA, LG, Philips and others, but those I mentioned were the most seen around. Plasma TVs were extremely heavy and very often it require two man to move the TV from place to place. Of course the resolution was relatively low, eventually it got a whole lot higher. Very first Plasma TVs used to last also very long time, we still get calls for those Pioneer TVs, and once they all done- the picture is great, so some of them used to last around 20 years, not all of them but some of them did. We do get newer plasma TVs for repair, of course they are a lot lighter, and a  lot higher resolution, and of course if is a bigger screen now - 60" or even 65". The plasma panel was a great invention, which made it possible to have a great picture with very rich color and awesome resolution eventually. Plasma panels were supposed to last up to 100 000 hours, and some of them did last that long. Of course, some repairs were done ( power supply , sustain boards, main board, and others) but as long as panel was good - the TVs were normally got repaired. In addition to the heavy weight, which made it hard to move there was another drawback - the power consumption was relatively high, but again - picture  was so good compare to the previous type TVs ( CRT  TVs and rear projection TVs) so Plasma TVs gave a lot of fun and enjoyment!

    DLP TVs. This type of TV ( DLP  - Digital Light Processing)   also drastically differs from previous type. Without going to details, it was awesome Invention - a bigger screen 65" - 70", with great picture and a very rich sound. Eventually the screen size got even bigger - 83" and even 93"!  And those "monsters" were not as heavy as their predecessors. So, it was  all good  - huge size, great sound, good  picture, relatively lower power consumption, and very low maintenance, I will come back to it a little later. DLP TVs began to replace the previous type TVs, but with all those features were at least a couple of  flosses - they were bulky, which made it inconvenient for some places, and quality of the picture significantly diminished if TV was not viewed from straight across point, and back to maintenance  - the lamp had to be replaced about every two to 3 years, in some cases more often - depends on the amount of the hours the TV was on. DLP bulbs were supposed to last up to 8 000 hours, it's very promising number, but normally they didn't last that long. But still, it was really easy to order them ( just provide TV's model number) and anybody could replace it, and it could be good for another few years, and after 8 to 10 years of the TV may develop a very specific problem - TV comes on fine, but it would be a lot of white dots on the screen and it was easily repaired - a chip would have to replaced - and TV is good for another 8 to 10 years ( of course the bulb would have to be replace meanwhile every 2 to 3 years) and those two the most common thing to take care of and TV would running great.

And of course there were some other problems with DLP TVs, but not as often, not at all. We still got calls for the DLP TVs, people still have them, the are still  around, very often they are used for video games: huge screen and great sound makes it look like a theater!    

    LCD TVs. This type of TVs were ,probably, the least popular, even though they were lighter then plasma, picture was good and they used to last a few years. We don't get calls for this type of TVs for a few years at least, for some reason they ( LCD TVs ) didn't make it,  however they did have a few good points: They were lighter then plasma TVs , reasonably good picture and sound, and they didn't last as long as plasma TVs used to last. 

   LED TVs, This type of TVs became very popular last 8 - years ago. They also called "LED Flat Screen TVs''. And, of course, they became a major portion of daily calls for service and repair. Since we specialize in SONY OLED/LED TVs and Samsung Flat Screen TVs service and repair. and thus we get a whole lot of TVs of those two brands, and, of course, we get other brands too: VIZIO, LG, SHARP, and others.First of all, today's LED TVs are far more advanced compare to LED TVs 7 - years ago. How long today's LED TV last? If TV plugged in either surge protector or conditioner then TV may last a lot longer then if it used otherwise. Next. The duration and frequency the TV is used - is the most important point, LED lights determine how long the TV may last, and keeping TV on max brightness shortens the lifespan significantly. Back to LED lifespan: Samsung claims that their LED should last about 100 000 hours, so if TV stays on for 6 hours a day, then TV should last up to 45 years, providing that all the rest of the TV works fine, however any power surge may damage/destroy main board, power supply may also fail, and the other boards may fail also. So, the longest  lifespan of TVs I've seen was about 25 years, and it was about 30-35 years ago, and it was CRT TVs, The average lifespan for LED TVs today is not 45 years, not even half  of it, not even 10 years. My longest lasting LED TV I've seen was Samsung LED TV 60", which was about 9 years old, First repair, and LED strips needed to be replaced. So, LED TVs are great TVs, they have grate picture, WI-FI capability, very easy to move, big screen size - 70" - 75" becomes very popular today. 

And in conclusion, few words about LED Flat Screen TVs flaws. First of all: I mentioned it already, LED strips. Next. Main boards are very sensitive to power surges, power supply boards failing less often now. T-con and other bards failing even less often. And the main problem with LED TVs, makes it beyond and repair at all - the panel. With all the great picture the screen cannot withstand any mechanical pressure, so any hit, or crack, of flexing of the screen, - damages the panel which makes replacing it beyond economical repair, and we get a lot of calls for this issue every day. So, if this issue will be fixed one day, and LED panels will become unbreakable, or less breakable -LED/OLED TVs will be the best TVs ever! 

Repair Case.

White circles on the screen.                                                   04.23.20

This is not as common defect with LED TVs: TV comes on fine,   there is a picture, good sound, TV stays on just fine, except on flow - white circles "behind" picture. The circles are about one inch in diameter, color - bright white color, location -it could be anywhere in the screen, age of the TV is about three years .  

   As I said this before - this is not very common problem with Flat Screen LED TV, for all the time LED TVs were around, I didn't see this problem, except lately, and just very few times, and I think it's (this defect)gonna be happening more and more often. So, while TV comes on fine, with good picture, but there are a white circles, it may be just a single circle in the beginning, or it may start with a few of them at once, and eventually they may multiply in numbers. This TV, Samsung 65", was called for repair with about twenty circles. The reason for the circles are diffusing lenses that are falling off the LED elemnts. It may happen because of they were not attached properly or just due to the age of LED strips. Anyway,  it repaired in one of the two ways: either replace all LED strips ( which is expensive and time consuming), or try to reattach the fallen off diffusing leneses, in this case it's gonna be cheaper, however the other lenses may also fall off one by one eventually. Also, reattachhing lenses improperly may cause different kind of cirles, which look almost like a shadow, so it's need to be done properly, and if it's done right, it won't be noticeable that something was wrong with it. 

And, as I mentiong LED strip replacing as a first option, they ( LED Striips) suppose to last up to 50 000 hours, so if the TV is that old, or getting close to that amount of hours, it's probably a good idea to replace all the LED strips at once. So, it's like a killing two birds with one stone: brand new strips, and lenses will stay on for at least a few years. 


Repair or Replace?

TV types.                                                                                                              04.28.20 

   Repair or Replace? That is - TV, to repair it or replace. In this overview I will try explain when it could be a good idea to fix the TV and when it would be a better choice just to replace it. First of all if my TV would fail, I would ask myself few questions:

   How old is the TV?

   How much life left in this TV?

   How long it will take to get the TV done? 

   And, last and not the least  - how much it may cost to get the TV repaeired.

And, of course, there will be a lot of less important questions like : If TV got replaced - will it fit to the place where the old one used to be, or the stand will have to replaced, or should I mount the TV on the wall?   

   If TV will be replaced, will I get bigger size TV or it's gonna be the same size? Anyway, first four questions would be the first  the first quesitons to answer before I would makle the decision which way to go - repair or replace. 

    Now I will consider all major types of TVs for potential repair. 

   CRT TVs. CRT TVs are almost gone, and if that kind of TV is dies, people always get it replaced, only if that TV has sentimental value- then it may be repaired, otherwise, like I said earlier - it just replaced. 

   Rear Projection TVs - exactly the same situation - almost always they are replaced, unless there are some sentimental values  or some memories  or something of that kind of things.   

   Plasma TVs. Those TVs are still around, and we do get a lot of calls for Plasma TV service and repair. There are only few brands we get calls for : Panasonic - 50" - 55" ( a whole lot less for 60"), we still fix it, and of course - if parts are still available, LG - the same sizes, and Samsung Plasma TVs. This is the most often brand ( Samsung ) we still see between other plasma brands - there are still many of them - and for a good reasons: they builst great, and thus last longer, they have really great picture, so when they fail - people normally trying to get an estimate for repair cost, and quite often they get it done. Once in a very rare while -screen get cracked - then the TV is beyond any economical repair, in this case TV need to be replaced. Otherwise Samsung Plasma TVs are normally get repaired for two simple reasons: repair price is normally rasonable, and once it fixed - picture is really good!

    DLP TVs. This kind of TV normally is really easy to maintain and very inexpensive. I think that DLP TVs are great TVs, for a few reasons: there are  only few problems with them: a bulb ( which isn't expensive, and very easy to replace), DMD Chip - this a more expensive repair then in first case, but it happens only in 8 to 10 years of usage, and once it done it is good for another 8 to 10 years again; and a one more common problem with a DLP TVs is a Color Wheel assembly. Like with DMD chip, Color Wheel Assembly need to be replaced by a professional technician to avoid unnecessary repairs. So, those are three the most common repairs, and in most cases it is a bulb that may need to be replaced. The word of caution: the replacement bulb should be the exactly the same as it was installed in the TV, and need to be original brand part, otherwise if it was bought online ( very cheap!) TV may work for two - three months, and will get back to the same symptoms - black screen. Except this time in additon to a new bulb the ballast may need to be replaced as well. 

    And there are few more less common problems with DLP TVs: Main board may go bad, very uncommon for this kind of TV, uless you got a power surge, next -power supply failure - also very uncommon for DLP TV,  normally it happens for the same reason - power surge. Other then that - there is no so many problems with this type of TV.          And again, DLP TVs are great TVs, easy and inexpensive maintenance  with a good picture and big screen sizes ( up to 93") and a really rich sound  - all that makes it really easy to decide rather to fix it then to replace it. Most often we get Mitsubishi brand, all other brands are almost gone or replaced, at least we almost never  get calls for other brands.

   LCD TVs. This type of TV is differs from the Plasma TVs by the weight ( Plasma TVs could be a whole lot heawier then LCD TV of the same size) and also by the screen type and consequently deffernt power consumption. This type of TV had a common problem with a converter boards. LCD elements used to last quite long. It was a longer lasting TVs, there were a few problems with them, but somehow once LED TVs came up later, most of them were replaced, and very often even without trying to fix it.

    LED TVs. This kind of TVs has been around for almost twenty years. LED TVs have a lot advantages compare to Plasma TVs: Lighter , bigger screens,  easier to repair, and if LED strpis failed and replaced - then TV may last again for another few years. However, there  is a great disadvantage with LED TVs ( same true for LCD TVs)  - the screen is fragile, and could be really easily damaged and thus it becomes beyond economical repair. However, that's the only disadvantage of LED TVs.  LED TVs have few common problems and normally reasonably repaired and could be done as in  home repair , without taking it to the shop, except for LED Strips replacement, in this case it should be picked up and for in shop repair. Replacing LED Strips normally a time consuming procedure, and also require a lot experience. Even the the concept of replacing of the strips is not compicated by no measns, the utmost caution needed while remowing and istalling back panel, even slight pressuare or flexing may ruin the most expensive part of the TV - and you may not even know that ( that the panel is damaged already) untill you put everythitn back, you get the TV assembled, powered up and that you see that is damaged, so this kind of repair need to be done by a professional in the shop, and like I mentioned before, the new strips should last for another few years, providing that the TV will stay the same amount of hours. How long does the strip should last? There are some numbers, some of them are promising to run up to 50000 hours, which means up to six years of continious use. And to summurise it all : Flat Screen LED TV repair could be done as in home TV repair, except rare cases. 

   OLED TVs. We don't have a lot of calls for OLED TVs, but whatever we repaired, it was always in home repaired, and always worth repairing, but like I said, we didn't get a lot of calls for this type of TVs, otherwise they are always easily repairable.

   And, in conclusion. CRT TVs almost replaced, except if it has a suntimenal value. Rear Projection TVs are mostly replaced for few reasons : parts may not be available and not so many people today know how to fix this kind of TVs. DLP TVs still repairable and people fix them because it's so easy to fix them and it also very reasonable. Plasma TVs - we do get a lot of calls for those TVs and they are repairable and repared quite often. LCD/LDED TVs are repairable, and also they are repaired in home, which is very convenient  for the bigger size TVs. Since they are newer TVs, parts are mostly available, even though some of them may be backordered, but eventually we get them all. So, once they 

get fixed, they may last for another few years, especially if the repair price is normally a fraction of what was paid for it. OLED TVs - in my experience they always worth repairing, those TVs are graet and defenitly worth keeping. 

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Repair case

Shadows or darker areas on the screen.                             06.30. 20

   With a newer model TV became available came a change in size of those TVs, Just about 7 to 8 years ago a 55" or 60" TV was almost the one of the biggest TV sizes ( not counting DLP TVs, they used to make 73" or  82" and bigger) . Now bigger size LED TVs become more and more available. Lately we get calls for 75" and 80" screen TVs  with a darker shadows or darker spots on the screen while picture still could be seen  even though not as bright in those areas. Eventually those darker areas may grow and become more and more noticeable

   This issue could be taken care also, but this kind of repair cannot be done as in home TV repair. Most of the repairs we do now are in home TV  repairs, almost any repair, but not this one. Years ago few brands used to have faulty Panels and it was looking exactly just like newer  TVs have now. But if with Panel issues it was beyond economical repair ( the cost of the Panel was almost the price of the whole new TV), than in today's issues with the darker spots it is almost always quite repairable ( assuming that the Panel is good). 

    Once the TV is in the shop - it could be done by a professional technician in a few hours by a  trained technician.This is not a DIY job, and if it is not done right,  it could be very expensive to redo it or make it right. Later we are gonna make a video how to do it, but again, this not a DIY job, 

   Once the repair is complete -then TV could work for the same life span as before, or at least the same issue won't be back, providing the amount of hours of usage will be the same ( or less).

    And in conclusion -  newer TVs are quite repairable, and once they are repaired they may last again for a few years, and the repair price is always a fraction of what was paid for the TV. 

Do people fix TVs today?                                                                        07.03.20

    Do people still fix TV?

   In today’s fast changing technology TV types are changing very quickly, every decade: since mass producing black-and-white TVs in 1946 (RCA 630-TS), then after World War II they were improved, and in 1954 first color TV was introduced. Since the 1950s up to the late 1950s CRT TVs (so called box TVs) became more and more popular and affordable. Screen sizes were growing up gradually form smaller screen TVs up to over 40” TVs (so called big tube TVs). Those CRT TVs were very reliable TVs and they were running for up to 25-30 years, they were very reliable. Then came Rear Projection CRT TVs, they were very popular for about 10 years, and they were gradually replaced by Plasma TVs and quite soon LCD/LED TVs came to circulation. Since the first Flat Screen TV was introduced, most of the older bulky box TVs were replaced, and most of the TVs sold in 2000s were Flat Screen TVs, and consequently CRT TVs, DLP TV and even Plasma TVs were discontinued. And in 2012 Smart TV  4K was introduced, and very next year – in 2013 the Curved TV came out. And now 8K TVs becoming available. So, in today’s homes there are 2–3 LED TV, and now new type of TVs becoming more and more popular – QLED TVs.

    This is a very brief history of television evolution and TV type changing from the TV repair and maintenance point of view.  

  So, as it was in very beginning, with a black and white TVs, so it is today with 4k resolution TVs – people still ask the same question – Do people fix TVs? With today’s TV prices going down this question make perfect sense. In addition, cheaper prices and better picture resolution and bigger screen and less power consumption – it is almost obvious that the new TV will have even better specs and it may cost less.

    So, do people fix TVs today, or they just replace them?                                          

I think this question could be answered very specifically: Either Yes, or No. But to answer this question we would need to know few things about that TV:

   How old is the TV?

   What’s the brand?

   What’s the screen size, or the model number?

   What’s wrong with the TV?

   And what would be the total repair price?

This set of questions need to be asked whether we have the older LCD/LED tv or we have the newest QLED TV.

   In this review I am not going to talk about CRT TVs, Rear Projection TVs, or DLP TVs, those are great TVs, but they are almost completely out of usage and we almost don’t have any calls to service these type of TVs anymore, even tough we have a great experience servicing them. We will focus on every day TVs, which are LED TVs. And now I am going to answer/analyze those five questions.

   The age of the TV. First of all – if a TV is too old, then parts are simply not available, and obviously that TV cannot be repaired. If parts are still available then I would ask how much “life” left in the set after it’s fixed? Will it last for another few years, or may it fail any time soon due to the overall conditions of the set? What would be the picture quality after the TV is fixed?

   The Brand. Everybody knows that some brands last longer than the other ones, so that may help to decide to fix the TV or not. So, If it is a good reliable brand – most likely I would agree for the repair.

   The Screen Size. The screen size would be an important point to consider: smaller and midsize TVs (50”and smaller) are not as expensive as they used to be few years ago, so one can add a “few dollars” and buy a bigger TV for almost the same price than the repair price for the smaller and an older TV. If the size of the TV which needs repair is bigger than a midsize (55” and bigger), then the bigger the size the more I would be inclined to fix it, providing there are more reasons to fix it rather it is just a size of the screen. And of course, if it is a bigger size TV – most likely I would fix it if it was my TV.  

   What’s wrong with the TV. This is also an important point to consider when one decides for/against TV repair. If it is a major repair, the most expensive repair – cracked screen – then it is beyond economical repair. And it is never make sense to replace a Panel (screen), regardless of age and of the screen size – it is always cheaper to buy a whole new TV than to fix cracked screen TV. So, cracked screen TVs are not repairable, not worth it. All other problems with a TV most likely are repairable (obviously, if parts are still available, as I mentioned it above), some part may not be readily available, sometimes software may need to be updated with some repairs. Sometimes multiple problems could be solved with repair/replacing one area in the TV circuitry, for example older Samsung TVs used to have a well known problem: TV comes on and off by itself, and in addition to that sound get distorted or sometimes cuts off, and the reason for all of that was Main board. And of course, It is always easier to fix a TV if the defect shows up, for example: TV won’t come on, rather then intermittently shuts off, or screen turns black but sound is good versus TV comes on with a black screen but has a good sound. So, intermittent problems may take more time to get TV fixed, rather than obvious defect.

   Repair price. That’s probably the most important point for/against repair decision. The repair price is a sum of two things – labor cost and parts price. If parts almost the same for all the repair shops, then the labor price could differ from shop to shop. With the prices of the new TVs going down, the repair price should make sense compare to price of the whole new TV. Also, the repair should be guaranteed, I thin every TV repair service should give at least  30 days warranty, to make sure that the TV was properly fixed and tested, and have at least a 30 days to test it at home.

   Now, back to the original question if people still fix TVs. I would recommend to everybody who’s thinking about repair/replacing TV to go through those five questions and see if it make sense. The answer to this question is simple: yes, people fix TV today. Does it mean that every defective TV need to be fixed?  Or one need to call his/friend and ask what to do? Or to call whom to get a reasonable advice to repair or replace TV? The answer is simple: call the repair shop. Before you call the repair shop, get a model number, seral number, the age of the TV, and what’s going on with a TV. In some cases the tech may tell you how much it may cot you to get it done even without seeing the TV, however in some cases TV may need to be seen by a professional. Some places may charge for the service call, some places may still give you a free in shop estimate, we used to do free in shop estimate, but now with a big screen TVs ( 60” to 80” TVs) it is smarter to schedule a service call rather than try to bring this huge TV (risking to damage the TV) to the shop, and in most cases TVs may be in home repaired, and if the TV has happened to be beyond economical repair, then this TV could be picked up and disposed. That’s another good reason why it is good to call for in home flat screen TV repair. Yes, they charge for the service call, some services charge reasonable serve call fees, but all of them should explain what It covers an exactly how much do they charge for it. And once you paid for the service call, you may ask for some time to think about the repair, if it’s worthwhile to paid for the repair or just replace it. And the tech may tell you how much “life” left for that TV, not every tech of course, it depends on his professional experience. If you decide to get your TV fixed, then TV may be picked up and the service call fee may cover it, and sometimes TV may need to be picked up to the shop. The rule of thumb – the bigger TV screen size, the more reasons for one to call for a service call rather then bring that huge TV by yourself. And as for us – we are always ready to answer your calls and we will try to explain you what’s could be done to get you TV back in good working condition.

Repair case.

TV Samsung 75", most common problems.                                     08.08.20

    Large screen TVs become more and more available and one brand, I would like to talk about today - is Samsung large screen TV , 75" screen size.  

    Samsung brand if not the best brand, then it is one of the best brands, and the only reason why we get so many calls for that brand is the large quantity of those TVs were sold and being sold every day .

    I am going to list the most common problems that we'we seen for about last two years.

The most common problem is - no power, absolutely  nothing, not even a red standby light. The other common problem is - black screen, but has sound. In both cases TVs are quite repairable. The next common problem is shadow, or shadows on the screen. Also, once in a while we see a TV coming on, then shuts off, then comes on by itself, and then cycle repeats again and again. 

   With a shorter lifespan of the newer TVs, a bigger size screen Samsung TVs show a good lifespan, anytime we get a call for a 75" Samsung TV , it is normally 4- 5 years old, sometimes 6 years old, which is really compare to other brands. 

   So, even though there are few problems (which are quite repairable), and yet really good screen size, great picture, and longer lifespan then other brands still by far outweighs any flaws with a great brand Flat Screen Samsung TV.    

How long do TV last after repair?                                                                                                          08 16 20

                                                         How long do TVs last after repair?

Once a TV is fixed and tested, or even before the repair, a very appropriate question should be asked: How long do TVs last after the repair?

First of all, any repair should come with a warranty on parts and labor, of course it varies from shop to shop, but it should be at least a thirty days warranty to make sure that the TV comes on and stays on and works good, but thirty days is not enough - after the repair TV should last a whole lot longer than that.To answer this question I would consider few points:

What type of a TV is it: DLP TV, LCD TV, Flat Screen LED TV, or OLED TV. Of course, DLP TVs and LCD TVs are older TVs, about 8 to 10 years old. If the repair was done properly, it may last for another few years, and in case with a DLP TVs, a bulb will have to be replaced every two to three years, and that’s the most common and easy repair and it is not a very expensive repair. In case with LCD TVs, LCD elements may fail some time soon, and due to the age, parts may not be available. So, before fixing an older TV, I would call any repair place and ask how much “life left” for this type of a TV and if parts are will be available in the near future for that particular model. If the TV is already fixed, I would make sure that TV is always plugged in into Power Surge Protector (same true for any type of the TV) and that may help to avoid unnecessary repairs and prolong the life of the TV. As for Flat Screen LED TVs, it is almost the same as for LCD TVs, almost the same repair cost, except than LED TVs are newer, and have lot more “life” left in them, and of course once it fixed - it will last longer than their predecessor LCD TV. Another common issue with LED TVs is a backlight issue, and as far is repair pros and cons on that – it is always cost effective to fix it, and once it done -  that TV may last again for four to five years ( providing that will be on for 35-40 hours a week. Of course, the longer TV stays on, the sooner backlight repair will be needed again. And after all, Flat Screen TVs are very reliable and have great picture. Later we will make a post about the most reliable brand TV. Flat Screen LED TVs in most cases could be repaired at home, so it is in home TV repair in most cases. One

“variation” of Flat Screen TV -is a Curve LED TV. And as for life span for curve TVs – it is pretty much the same, the only difference if the geometry of the screen, other than that – life span and reliability is the same as regular Flat Screen LED TV. And the latest generation of the modern TVs – are OLED TVs. Repairs are always cost effective and make sense to fix those TV. And one very common question that we are getting every single day – is it cost effective to fix a cracked screen TV, and the answer is always the same – not worth it, it is time to think about a new TV. Another common reason a mewer Flat Screen TVs failure is a power storm, or power surge. And in most cases, it is also very repairable.

In conclusion, the newer TV is the longer it may last after the repair, it may last again as a brand-new TV. With the older TVs, however, once it is fixed, it may to be kept longer on the bench for testing to make sure if there is no more failing components any more issues.

And as far as pricing goes, with our repair prices, it is always cheaper to fix the TV ( except for the cracked screen TVs).                                                                              

And a little bit about other types of TVs, such as:

CRT TVs. We almost never get calls for this type of TVs, at for the last few years.

DLP TVs. We don’t get calls for this type very often repair, even though they are still in circulation and people do fix them. Normally, after they fixed they last at least for a few years.


Plasma TV. If parts are available, then TV is quite repairable, and may last again for a few years. Plasma TVs have a great picture and sound, and almost always worth while a repair.

And LED TVs, they are always repairable (except the cracked screen) if parts are available, and often they are.

OLED TVs. We don't get as many calls for OLED TVs as for other types mentioned above, most of them LD OLED TVs, and they're quite repairable and the repair price is very cost effective, and once it's done it may last as long as a brand new TV. And of course, the picture quality is absolutely amazing!

All those types mentioned above were meant for TV screen sizes up to 65" - 70". As for as bigger sizes concerned, 80" and bigger - reliability is cost effectiveness is the same as for smaller (65"-70") LED TVs. And again, newer Flat Screen TVs are quite repairable and worth while to get them done, of course depends on repair charges in particular local shop and repair quality, which is also important.                                               So, if your TV doesn’t work right, or your have any questions about your TV, call us with your TV’s model number and describe the problem and we may tell you how much it could be to get it done.   

Most often calls - most often TV problems.                                                     02.10.21

   This year, and to be more exact, about six - seven months, a deferent batch of the TVs turned out to be the culprit for a lot calls.

   In addition to a well known and reliable brands such as: Samsung, LG, VIZSIO, of course SONY, and other brands such as : Sharp, Hitachi, TCL TVs their fare share of calls quite often, 

    Before I will go into details, first things  first. I know, I mentioned it few times, the number one call - is still a call for a cracked TVs. And I would like to remind that cracked screen TVs beyond economical repair. And it never makes sense to try to repair screen on on a cracked screen TV, regardless of the size and the brand of the TV. So, if it's a Samsung, or SONY, or any other brand, simply it doesn't make sense to repair it, just replace it. 0

   Second. Backlite is a next most common issue with a TCL-Sharp-Hitachi and the other of the same class of TVs. Any smaller size TV, and up to a mid size TV, is a quite repairable case, however for a bigger size TV - DIY may not go very will, always leave it for a professional. And once it's taken care of, the TV may last again for another few years. And one more thing. I've seen a seven - eight years old  Samsung LED TVs with no single repairs. lately, however, it's unheard of for a such a longer lifespan ( Later I will write down my suggestions about simple tips to keep your TV alive longer). The number of the LED strips depends on the size of the TV and the brand name. It may vary form an single strip up to 12, once in a while it could more then that. It is not complicated to replace the the backlights ( after you've done it a couple - three times) especially if it is a smaller size, such as 32", 40" screen size, and gets a bit more different, and more and more complicated with a bigger screen sizes. And at this point it becomes NOT DIY project. We got a call for a Samsung LED TV repair in Owasso, person who tried to replace backlights on his 65' Samsung, and he thought that he knew what he was doing, or at least, what he was supposed to do, and then he realized that he did something wrong, and after he called us, we were able to explain it to him, at this point it would be cheaper to buy a whole new TV. So, to make it simple and short, a smaller size TV could be repaired, assuming that the person knows what he/she is doing, and as for a midsize or bigger TV size - leave it to a trained a professional technician. However, backlight replacement doesn't  not guarantees that picture will be just fine: quite an opposite - the replacement may not help at all, because the same symptoms  (dark picture of lack of it) could be caused by LED drivers circuit, or by backlights and LED drivers circuit board at the same time. And, also it is always makes sense on a long run, to replace all backlights at once, since it is a time consuming procedure, it pays off, to replace them all at once. How long could it last (the TV's lifespan) after back lights are replaced? Normally it should be good for another the same lifespan  for the same issue.  And it is always a good idea to keep a BACKLIGHT control in a mid position,  this way the life span of the new set of backlights could be longer.

   Another issue with a newer LED TVs, the color issue. I am not gonna mention the brand, and the TV was between and and two years old - picture was fine, except the color was purple - red ( totally missing the green light), and the issue was the panel itself, which means TV was gonna be replaced. And the defect wasn't caused by hit or mishandling, just became defective after about a year and half of use, nothing was done wrong with it, and nothing could be done to avoid it.   

Backlight issues.                                                                                                           05.23.21 

   Backlight issues, are one the most coon issues among newer LED flat screen TVs. Similar issues were common for LCD TVs, however, even though it is the same area (backlight ), the components, or parts will be different, compare to parts in case of LED TV repair. But, since LCD TVs are out of circulation ( or most of them), we are not gonna discuss this kind of TV in this article, but rather we'll focus on the newer kind of TVs  - the LED Flat Screen TVs.                                                                                                               LED TVs are normally last between two and four years, before the backlight issues begin begin to develop. First, it may start to show up by  either by a very short loss of of video ( actually, the whole screen became black), then after few seconds TV comes back to normal, later it repeat itself, and eventually it may happen more and more often, and each time the flickering becomes longer and longer till the whole screen turns black, but the sound still could be there.                                                         Sometimes, the same issue with backlight appear in a different way: TV comes on, but the picture may have black shadow ( or shadows), which may grow eventually in a size, and finally TV will stop coming on at all, however some brands do have this kind of issues due to the PANEL failing. So, before dealing with backlight issues, it would good idea to make sure, that if is backlight issue indeed, and not the panel itself.                                                                                                                                                                As I mentioned in the above, backlight may last between two and four years, even though it varies form brand to brand, and form the model to model. I've seen a Samsung Flat Screen TV, 65" curve screen, and the TV is about eight years old, and even though it was fixed twice for different reasons, it never had any issues with backlight. 

Most common brands and TV sizes 

TV Repair.                                              10.10.21                                   

   Among the well known brands, such as SONY, Samsung, LG, and others , there are few others, newer brands, less known, but becoming more and more popular, such as: TCL, Element, and others newer brands. 

   Some of them, (Element, TCL, and others) may come in smaller sizes: 50"- 55" and bigger sizes, up to 80" plus. 

   In addition to common defects, there are some very specific failures, which are very uncommon to other brands, such as SONY, Samsung , LG, and few others.   

   But first: Here are three most often calls, regardless of the brand, the size, and the age of the TV:

   Cracked screens ARE NOT REPANLE. We got a lot of posts on many different platforms with this massage. But We do get this call at least a few times a day and every single day. 

And I am gonna repeat it again, CRACKED SCRFEEN TVS ARE NOT REPAIRABLE. NO matter how old and how big is your TV -is the screen is cracked - just replace it. 

   Second the most often called question: TV may have the sound, but the screen is black. Normally,  it happens after at least a year or two after the TV is in in a use. Very often the reason for that is BACKLIGHT issue or power supply, or both of them. And  to replace the backlight is not a very complicated idea, however, it helps a lot if it was already once at least a few times. The screen itself is a very thin, and it is really easy to damage it, and the cost of the screen/panel is a very close to the whole new TV. So, I highly recommend to call the repair shop and let them get it done in the shop, So, this is not a DIY repair, unless it was done at least few times already. And, once the backlight if replaced. you may expect at least the same life span, so from economical stand point - it is almost always make sense .

    Third most often call - No Power, normally it happens the power outage or storm. Normally it is also repairable, only in case with an older TV parts may not be readily available, so if parts are still available, the it's probably makes sense to get it done. 

Those are the three most often calls for repair. Next we will discuss more specific calls and possible reasons for it.