Washline,
My Denon does the source selector thing! The most annoying thing! I had been extremely busy, and then very tired, and then when I felt up to dealing with it it stopped as mysteriously as it started. Funny thing- I thought I would be relieved to read that someone else had this problem, and I am in part. But it is frustrating not to understand how my amplifier works- as it must be for you, especially when everyone must seem miles out of reach and real information a real commodity. It puts my situation in a new light, and I thank you for that. I wish I could tell you I had your amplifier( for all sorts of reasons) and that I knew why the source selector behaves this way and what to do about it. I would love to tell how to deal with that. I would love to be of some help! All I can really do though is admire the intelligence and patience you have displayed in sorting out your problems. The input selector chip seems a reasonable quess. Hopefully others here have had this problem and will be able to help you figure it out, and that MF will offer some insight too. In the meantime, even as my lowly, but much beloved Denon is behaving itself I am resolved I will learn something about these amplifier related quirks, and if I learn anything soon enough and reliably enough I will try to pass on what I have learned. I am sorry you have to put up with all this ( my long post included) and I wish you luck.