LG B6 OLED's screen just went black during use

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LG Television

Repair guides and support for your LG TV.

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uKER @uker34112

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게시일: 2024년 3월 24일

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LG B6 OLED's screen just went black during use

I was watching a YouTube video on the TV's native app and out of nowhere the screen goes black.

TV still turns on. When you turn it on relay clicks, standby LED tusns off, and sound is still heard. TV is evenl visible on the network and I can cast video to it, and sound is still heard.

It's just that the panel is pitch black. No startup logos, no screensaver pictures, no menus, nothing.

I tried power cycling it, unplugging it, holding the TV's power button for 60 seconds while unplugged, leaving it on for a couple hours, keeping power+vol down and power+vol up on the remote for 15 seconds... Nothing helped.

Any suggestions?

In case I have to bite the bullet and have it repaired, what would be the likeliest culprit? T-CON?

Thanks in advance!

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@uker34112 sure, could be the T-CON board. Could be the panel and a few other things (unlikely but we can't promise anything). What is the exact model for your TV?

oldturkey03 의 2024년 3월 24일

Hey, thanks for the reply. It's OLED55B6P.

uKER 의 2024년 3월 24일

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@uker34112 sure, could be the T-CON board. Could be the panel and a few other things (unlikely but we can't promise anything). What is the exact model for your TV? — oldturkey03

jayeff @jayeff 평판: 450k 11 367 1.4k · Answer 1 · 2024-03-25T00:13:42-07:00

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jayeff @jayeff

평판: 450k

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게시일: 2024년 3월 25일

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Hi @uker34112

It may be a mainboard problem.

Go to p.79→p.80 (of 95) of the service manual to see what to check for a Video error_no video/normal audio problem

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Hey, that service manual will sure help. Really appreciated.

Now, I checked and the situation they're troubleshooting seems to describe getting audio but not video from a certain input, not that the TV's whole video output is dead.

uKER 의 2024년 3월 25일

@uker34112

Not sure I understand what you mean.

Where does it say on the p. 79 (page A1 of the troubleshooting section) that the video is coming from a certain input?

It's just saying to check if you can see the Vx1 lock LED light at the point shown. Unfortunately you can't check the white balance value on p.80 (A2) as you won't have the special remote that has the ADJ function

jayeff 의 2024년 3월 25일

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LG B6 OLED's screen just went black during use

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