I'm switching between stereo and surround modes. For instance, if I switch from 5-channel stereo to 5-channel surround, I will lose the center and sub. Also, I can switch between various stereo channels and subsequently lose the signal when I go back to 5-channel stereo.
I called B&K and was advised to reset the processor which I did, but that didn't solve the problem. It appears worse now. I haven't been able to get anything from the center or sub all day. Usually I could just switch the system off and regain those channels, but now that doesn't appear to work.