Random no sound/black screen flicker

[MrWinn]

Recently changed TV to a new LG G4 65" (2024 model), with an LG soundbar.

Since changing the TV anything we watch from Sky Q 2TB v3 set top box (hardware version 32B206), we get 2 issues:-

1) Random no sound for up to a second 

2) Random Black screen flicker for about half a second.

note: these DO NOT normally occur at the same time. 

It can be up to 30 mins between the issues occurring, or it can be a few minutes.

No issues watching with Apple TV 4K, watching 4K streaming like Netflix, Apple TV etc.

I have switched HDMI port with the Apple TV,  changed HDMI leads for expensive ones, performed a reset settings and even forced an update, but the issues still occurs.

Assuming it's not a TV issue if Apple TV works OK.

Anything else I can try, before I ring Sky?

[Mazagoon]

Did you find a solution to this problem. I am having the same issue and have turn off deep colour. Not sure if this has fixed it yet but if you have an official fix from sky I would be grateful to hear it 

[MrWinn]

@Mazagoon Not yet, still to report it to Sky,

Your deep colour change was that on TV or Sky box?

[cuke]

Personally I'd also report to LG. The G4 was released with a HDMI issue which was resolved by a firmware update. However for some LG introduced other bugs, sound dropouts and blackouts similar to what is being stated in this thread here. This is the thread that reported such issues

https://www.avforums.com/threads/lg-oled-g4-hdmi2-video-issue.2494503/page-9

[Mazagoon]

So, I called LG and Sky again because the issue persisted. Both companies offered assistance, but nothing seemed to resolve it. I also reset my TV and Sky box, which I had done before. This time, when my Sky box previously appeared as a Vodafone Set Top Box, it changed to a Sky Set Top Box. And guess what? It finally worked! The universal remote could now control the Sky box, which it hadn’t done before. It turned out that there was some kind of handshaking issue, and this had resolved it. Since then, my problem has completely disappeared! 

[Mazagoon]

Also, and I don't want to teach grandma to suck eggs, but make sure you turn off the TV and switch it off at the wall before you add any HDMI cable to the ports on the TV. Add the HDMI while to Sky box is without power then turn the TV on and then the Sky box.