Out of nowhere tonight I depressed the bypass 2-channel button as I was listening to music. Buzzing came about; I didn't have this problem earlier today. I checked the fuses out and they're o.k. If I take the 1.7 out of 2-channel bypass and use the digital coax connection, no problem. I turned on my multi-channel audio player (Denon DVD-5900) and played a DVD-A in multi-channel analog --- no problem. I disconnected all analog connections --- buzzing still present. If I depress the mute, the buzzing goes away.
Any ideas?
