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Half screen upside down. Other function all good.

Sony Bravia TV 55'' ultra 4k

Hi,

My TV got right 25% of the screen firmly upside down and then the next 50% is turning transparent with both upside down picture and stright picture. Then the very left 25% is fine. All other funtions are good.

I bought a new T-con board but the issue remain same. I disconnected the every right ribbon cable from T-com board to the long chip (sorry, not sure the name of it) connected to the screen. The upside down image disappeared. The right 25% of the screen turns white and the image is gradually fading out from left to right. I did the same to the every left ribbon cable. The straight image disappeared. The upside down image is fading out from right to left with the last 25% of the screen white. I swarped the rabbon cables around but didn’t change anything.

I am suspection there is a logic control unit on the chip between the T-con board and the screen is wrong but cannot identify which one. Could anyone please help me to solve the problem?

The chip is 55T08-S01 T550QVF01.1 XL.

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@lleei definitely an interesting error. Since you already replaced the T-con board it does stand to reason that this is caused by a failure of the LCD control board. Looks like your board is a 55T08-S01 Check places like this for a replacement. It is not easy to replace it since the ribbon cables on that should be affixed to the panel via a special bonding process.

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Thank you for your help. I dont have the tools to reconnect the ribbon cables. Would you be able to know which component on the LCD control board is wrong so that I can replace it.

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I really would have to see the board so that I can at least try to identify what is what.

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Thank you for yor reply. It's a long board. I took 4 pictures for each part. Under the other half of the screen, there is a similar board.

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Hi, I have the exact same issue with 6yr old Sony tv. Did you manage to fix it?

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Mate, it's the problem with the side board. You cannot replace it by your self. You need a big machine for it. I sold the TV to a man who can fix it.

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T-con board will fix issue. Just had exact issue along with distortion

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The T-con board was already replaced and did NOT resolve the issue.

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Which board should I replace? EXACT same problem, I am a technician. "Seems" like it would be the LED driver board. I guess I'll order both if no one can tell me for sure which one is bad

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Which board is it? Main or LED driver board?

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You can't "swap" cables around. You will blow out something else. You are not qualified to work on the TV.

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Raymond will be eternally grateful.
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