After some home decorating, I've reconnected my Denon AVR 1910 to the rest of my system. After seemingly working fine, I couldn't get sound from the TV or CD player. After spending some time re-reading the completely incomprehensible owners manual, I deduced that the problem could have something to do with assignment of imputs. I couldn't operate the speaker button either (front A front B etc..). I thought I managed to get things working again when the front panel started to display - H/P imput off/on- alternatively while making a clicking noise. I tried to repeat the assignment steps and all I've managed to is lose the assignment for the TV! Feeling more and more like a fly getting further entangled in a web I'm turning to this forum for help. Maybe I should reset the amp to factory settings?? I've double checked various times the connections. Please help.