Don't know if it is the same thing or yet another new audio bug but I get a deafeningly loud interference/screeching type noise at random, usually several times a week. So loud you think it is tearing your speakers/eardrums apart. It happens randomly when pausing/playing/fast forward/changing channels. It comes out of the tv speakers HDMI and optical out.
Been reported numerous times since day one. Nothing ever done about it, of course.
VM please do not phone me again to discuss my posts. I have not welcomed or invited such an intrusion.