Denon AVR-900 Receiver "250 trouble shoot" Questions

...250 Watt RBH MS 10.1. At first I obviously suspected that my sub woofer went bad. So I ran some trouble shooting and have discovered that the sub woofer functions properly. If I plug it into a direct ...

Trouble shooting a Denon Reciever Hi there, I have a denon avr 900 that has worked great for 7 years until the other day there was a pop and everything was out except the "standby" light. Unhooked all