We have a DCX3400 cable box connected to our Denon 3312 using the HDMI 3 input. Last night we watched the Fox NFL playoff game using the cable box DVR. Every thing was fine. This morning there is video but no audio from either live TV, yesterday's DVR recordings, or the DVR recording that's going on right now. I've tested the Denon 3312 and I"m getting audio from our Blu-ray player connected to the HDMI 1 input.
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.
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.

























