oled OLED Failing?

[Christonian 0]

Screen flickers real bad and seems to be getting worse over time should I make a claim it is only month and half old or this normal, now it is doing this every few minutes?

LG C9 made in April 2020 bought in early August

IMG-1198.MOV

[td47 53]

@Christonian Is the issue on any channel, only specific ones (e.g. HD).  Is it more so with animated films?

First, have you got any extra devices attached (e.g. BD/DVD player, AV amp [AVR], or TV cable box via the AV AMP into the TV eARC HDMI). If so, are ALL of those devices connected via good quality cable that cover HDMI 2.0 or 2.0a (often quoted as 2.1)?  Lower quality ones can be a loose fit and have connection or internal crimp issues.

Second, have you checked that you have the latest firmware update in that TV. I see that the latest might be 04.80.03 depending on your region (copied from AVFORUMS, user post dfa937)?

 If no joy with any of the above, I would get it checked or replaced under warrantee.

FIRMWARE INFO: "- 04.80.03 - KR, US, EU, June 2020

• OFFICIAL CHANGE LOG: Apple AirPlay function improvement - (the rest of changes mentioned below are UNOFFICIAL, extracted from the firmware itself)

• WebOS version updated to v4.8.0-52203

• The device codec capability configuration for the EAC3 codec changed from 6 channels to 8 channels.

• The device codec capability configuration (EDID) for the LPCM codec changed from 2 channels to 8 channels, so the 2019 models can Pass-Trough multi-channel PCM audio via eARC ---- this firmware update has a bug which causes eARC to incorrectly mark multi-channel PCM sample rates - rendering some AVRs/Soundbars mute

• The list of CA certificates was updated.

• Media server 8K video playback support added.

• The max size of the saved EPG data was increased (size of the volume increased by 10MB).

• Airplay application was added to the list of apps that are kept alive.

• Built-In App-Updates:

• WebOS Browser App (Chromium) updated (internal version didn't change).

• LG Advertisement App updated.

• Firmware updates of the following modules:

• WIFI

• Audio DSP

• HDMI 2.1

[Christonian 0]

@td47 

It has updated itself a few times since buying so I would assume it is up to date on all options

I was using netflix through the TV so no cable issues plus just upgraded them just in case before this to 2.1 48 gbps cables so when I get PS5 I will be able to take full advantage of it 

Using my TV as the main hub and only outputting Earc to AVR for dolby 

Seems to do it on everything like PS4, Switch, Plex and Netflix/Disney/Prime etc so not internet issues as when I game it is just single player games no internet needed

[td47 53]

@Christonian thanks for quick feedback. If you can post what firmware level you are on, might be useful. Typically in About TV, or system details, or in the update screen.

[Christonian 0]

@td47 04.80.03 firmware

[td47 53]

@Christonian Thanks for confirmation.I just spotted this on another forum for LG C9 flickering/flashing bright:

"Its related to the « Logo Luminance » setting...just turn it off and you will be ok".  I do NOT have a C9, so cannot verify that, but it is worth a go. Others said it fixed the issue.

[Christonian 0]

On 9/16/2020 at 8:05 AM, td47 said:

@Christonian Thanks for confirmation.I just spotted this on another forum for LG C9 flickering/flashing bright:

"Its related to the « Logo Luminance » setting...just turn it off and you will be ok".  I do NOT have a C9, so cannot verify that, but it is worth a go. Others said it fixed the issue.

that seemed to work for a few episodes and then started flickering again about 1-2 hrs of use 

[td47 53]

@Christonian Interesting that it fixed it for a bit. Sounds a bit like software/firmware IMHO. I would contact LG support directly to see if they know if it is a known issue with the C9 and that firmware update. I think I have seen other complaints about B7 and C9 flickering. Push the issue and insist on a replacement under warrantee if they try to fob you off.

Edited September 18, 2020 by td47
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