The lady at Denon suggested that too high of a level on an input could keep the thing from coming on, so I switched it away from used inputs. Still did not come on.
It has a system reset. I did that numerous times, being sure that Zone 2 had no signal going into it before turning it on. Did not come on.
I disconnected every cable going out of the receiver to any chassis more than three feet away. I did not disconnect the speaker leads, though; they go 60 feet to the room the plasma is in. Still did not come on.
The lady at plasma said it was bad.
BAD Denon ! ! !
Thanks for all the interesting answers. I think we should all keep in mind that many of you have seen some really weird and tweaky problems with Denon receivers, and the people at Denon are aware of this. I have never heard of this sort of tweakiness with Yamaha or Rotel, and there are probably other stable brands that I simply have not used yet. Denon's engineering department should be told that their products are not good enough for professional installers to use. They would be okay for amateurs, who will be just as irritated as us, but who won't actually lose income over their tweakiness.
We will get it service and then just hope.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
