Recently I have noticed the volume drop on my Arc setup. It is for a few seconds only and the sound drops to barely audible (it does not cut out completely)
In the last few weeks it has become increasingly more frequent in occurence.
It happens either when the input is just regular TV or from a HDMI input from a n AppleTV
local button control is disabled
I dumped a diagnostic event once it happened this evening : 2071955409
Any help would be appreciated