LG C2 ASBL in dark HDR scenes

[mjkopri]

Hey all,

 

last week I was watching Game of Thrones on my C2 77" and there was a darker scene that lasted a few minutes. After 2-3 Minutes the picture started to become darker and darker until it went so dark that I couldn't recognize anything anymore. As soon as a brighter scene starts you can see how the panel brightness boosts right up and everything looks normal again. The brightness increases also when I press any button on the remote or shake it.

I googled this and found out that it's a problem with the asbl kicking in during darker HDR scenes on LG TVs (except for the 2023 models that have been fixed with the latest update). I wonder why so few people are mentioning this in their reviews...

The only solution I know (except for disabling asbl in the service menu) is to shake the remote every few minutes - great feature for a TV that costed me over 2000 €

Do any of you guys have some other suggestions of things I could try besides disabling Energy saving and AI Picture enhancements?

Thanks!

[seanondemand]

I mean, sounds like a pretty rare edge case, and that the workarounds have already been settled (energy saving/ai enhancement), so at this point you're probably just waiting for a firmware update from LG if you don't want to do those.

[mjkopri]

Yeah, it looks like it...

I just saw this video - the first problem, that is exactly what is happening:

 

[circeseye]

4 hours ago, mjkopri said:

Hey all,

 

last week I was watching Game of Thrones on my C2 77" and there was a darker scene that lasted a few minutes. After 2-3 Minutes the picture started to become darker and darker until it went so dark that I couldn't recognize anything anymore. As soon as a brighter scene starts you can see how the panel brightness boosts right up and everything looks normal again. The brightness increases also when I press any button on the remote or shake it.

I googled this and found out that it's a problem with the asbl kicking in during darker HDR scenes on LG TVs (except for the 2023 models that have been fixed with the latest update). I wonder why so few people are mentioning this in their reviews...

The only solution I know (except for disabling asbl in the service menu) is to shake the remote every few minutes - great feature for a TV that costed me over 2000 €

Do any of you guys have some other suggestions of things I could try besides disabling Energy saving and AI Picture enhancements?

Thanks!

lg came out with a firmware to fix this (firmware 03.10.19).....you need to update your tv

[mjkopri]

That is not for the 2022 TVs. My TV has the firmware version 3.30.67. They only patched the 2023 TVs..

[circeseye]

19 minutes ago, mjkopri said:

That is not for the 2022 TVs. My TV has the firmware version 3.30.67. They only patched the 2023 TVs..

ok that version you have is a bad update that effects some tv's, acknowledged by LG.

so your not the only one. another update will be coming to fix it

 

 

https://www.youtube.com/watch?v=Jz4sJ7WSAPo

 

they are talking about it on avsforums also

[Omon_Ra]

14 hours ago, mjkopri said:

The only solution I know (except for disabling asbl in the service menu) is to shake the remote every few minutes - great feature for a TV that costed me over 2000 €

You should really disable the energy savings, auto contrast/brightness, and AI stuff anyways. Nothing worse than a display 'thinking' it knows how to adjust the image better than the DP...

[mjkopri]

9 hours ago, circeseye said:

ok that version you have is a bad update that effects some tv's, acknowledged by LG.

so your not the only one. another update will be coming to fix it

 

 

https://www.youtube.com/watch?v=Jz4sJ7WSAPo

 

they are talking about it on avsforums also

Thanks for this information. Hopefully they are releasing an update to fix this soon. 

[mjkopri]

A short update: I've talked to the LG Support (Germany) and they don't know anything about this problem. Their advice: I should reset my TV. (which I've already done)

So I guess I and all the others reporting are just hallucinating

[Stahlmann]

My 42" C2 had the same behavior. I decided to just disable this auto dimming feature in the service menu, as it was more distracting in my PC monitor use case. My C9 also does this auto-dimming, but so far i haven't found any real world content where this was actually noticeable.

 

I'd recommend to disable energy saving and AI picture settings. That should get rid of most of that behaviour.

[mjkopri]

Hello, just an update: Finally with the newest firmware release 03.33.65 the issue has been fixed by LG.