XR-65X90J Disappearing Sound on Numerous HDMI ports

[Shwing]

Hi.

I mainly use my tv for PS5 (HDMI 4) & PC (HDMI 3), and have always had the occasional disappearance of sound on the PS5 HDMI 4 channel - where only a restart will solve.

Thing is it's started to happen even more regularly, and now is also doing it with my PC on HDMI 3.

Any ideas / solutions?

I really have lost so much faith in Sony products, as the quality seems a shadow of it's former self (yet they still charge a premium).

Any help much appreciated, as I'm not going to restart set every time - I shouldn't have to.

Ta! 

[Shwing]

Anyone?

[royabrown2]

@Shwing 

Full factory reset.