Possible Dead T con board? or is it the Screen?

Tcon board is your best bet.

Does anyone know if it matters if you use a tcon board that has the same layout as the suggested model (BN96-30068A vs BN96-30070A from samsung) . All other info(numbers) is the same on the tcon board. The former is suggested for 50“ models the latter for 65” .

If it recomends a specific model it will only work on that one. If it’s recommended for various models then you ca alternate. Sizes of screen will defer on boards to be used.

I have SamsungUN60ES 7100, with intermittent vertical lines, see picture, is this a T-con board? I already checked all ribbon cables inside may do it again

Ours is a Sony Bravia that is now over 10 years old. Several months ago we started noticing lines, especially on the left (our left) side of the screen. They’d go away after the tv warmed up. Then we started noticing it was darker on that side of the screen, but again, after the tv warmed up the screen would be normal. Then about two months ago it started getting worse and didn’t ever get completely better, even after the tv warmed up. So I watched some youtube videos that all talked about the ribbon cables becoming loose over time and to apply pressure along the top and see if that made it better, and if so, it was a loose cable and if you put electrical tape or something that would help keep the pressure, it would fix the problem. Hubby pressed along the top and sure enough, when he pressed in one spot on the left side suddenly the picture cleared up. Stayed good for about a week, then problems again, pressed again, fixed again. A week or so later, same problem, but this time when he pressed on it nothing got better.

So I decided to take the cover off and look at it better. As I was pressing on the tops of the ribbon cables that run down from the top of the frame, for a minute it got better but then suddenly there was a wide white vertical line, with a thin green one down the center of it, running down the front of the screen, and it was perfectly aligned with one of the cables. So now I still have the dark side of the screen, and some ghosting, and some lines, but now this bright white streak/line right down the front. Another weird thing is that if the whole screen is bright (like watching a show set in a snowy place) then the darkness even on the left side is basically gone, but if the scene is dark at all, that side is almost black. I don’t know if it means that particular ribbon cable is bad, or if something is loose, if things need to be replaced or what. It’s very frustrating as it’s been a great tv. Hubby wants to just buy a new one, but even if he does I would still like to try and figure out this one as it could then go in another room.

Yes replace tcon board and it should solve your problem.

%#*@, just this evening my LG LED TV turned black screen. The sound goes on but the screen is black. But in the dark of the room I see flashes of TV light go on and off at intervals.

I wonder if I have a tcon problem or the main board problem. Who has a lead? Thanks

I am having such a problem Sony XBR52 hx909 I believe it’s the T Con board after reading up on some of this the comments I now come to the conclusion that is the power board .When I turn on the TV there is a lot of horrors horizontal lines which is colour green and other multiple colours can anyone tell me is it a mainboard or at T Con board or the audio board thank you. when I turn on the TV there is a lot of horrors horizontal lines which is colour green and other multiple colours can anyone tell me is it a mainboard or at T Con board or the audio board thank you .Cannot find the T Con board can I substitute another T Con board .”

I have a Sony Bravia and its 7 years old. I tried replacing the tcon board but I still have horizontal lines throughout the tv?

It is not the panel, it's the 2 FPCs!

TLDR: Oxidized/bad contacts of the two flat flex cables from T-CON board to the LCD panel distribution board.

I had the exact same issue and fixed it.

For me the issue started with static equally spaced horizontal lines every 6 pixels (this may not be the same for you). I didn't care much, because they were not noticable at normal distances. They were not completely black, but darker. So I lived with it.

After 20 months, out of nothing suddenly also colored vertical lines appeared. Mostly red lines, but some few lines of other colors as well. The intensity varied depending on the displayed image, The lines were on both screen halves, left and right. After power on the lines faded in within 10 seconds. Powering off and on again gave the same observation. The lines, initially non-existent, were fading in slowly,

Not knowing the cause I tried everything except replacing boards due to availability.

• Reseating and wiggling cables. I took out the 2 FPCs (which was the culprit not knowing at that time) multiple times and it did not change anything. So I searched on the T-CON board.
• Heat gun on components
• Freeze spray on components
• Because of some 120Hz ripple on the 12V supply for the T-CON board I tried using an external power supply (it draws about 1.4A - 2A current)
  

• I reflow soldered the BGA components: 2x RAM chips, Sony and WISE-Processor, because I thought mechanical stress of the heatsinks could have broken some BGA contacts
  

• I even inspected the panel driver chips and panel substrate, despite it's obvious that it could not be the problem as the stripes were not limited to a specific section (column) of the screen.

I gave it a last try and when I tested the screen with only one of the FPCs seated, suddenly the lines were gone (the screen half of the connected FPC of course).

So I rubbed the FPC pads with antistatic clothing and isopropyl alcohol.

(not the actual picture, because I forgot to take one)

Wipe these pads really good! 2 times is not enough! Do it for a minute or so and BAM:

I also cleaned the other one and this fixed the horizontal lines!

Check your FPCs first and clean them properly! Even if one is responsible for only one screen half it could influnce both halves!

Pressing the connector / cable, pushing, pulling, wiggling and reseating (multiple times) the cable did not make the slightest impression beeing the culprit.

I've also read that adding a stripe of scotch tape on the back of the cable (increases thickness) could improve the contact.

Also check the other end (panel distribution board). For that the screen must lay on it's back to prevent the display falling out.