In the past with the same cable box and a Denon 3806 there were a very few times when there would be no audio after powering on to watch TV. Changing channels always solved the problem. I don't recall having this problem since we got the 3312. I've tried powering off and back on, and I've tried changing channels. No luck.
Is there any 3312 setting that can turn off audio for a single HDMI port? Any suggestions, no matter how wild, will be appreciated.