My denon AVR2106 is playing up. It was all working fine - then ! When I have my dvd player hooked up to the amp via component and digital optical - I get a picture but no sound. I also have my xbox 360 hooked up to the amp via component and digital optical - works fine. I have swapped them around to see if there was any problem with the bits of kit or cables - everything works ok. The problem seems to be that when I press the "DVD" button on the remote (showing on the amp display as dvd in ) - there is no sound. Sound comes through on the other input channels - just seems to be the "DVD" in ?????????? The component switching works fine. I have tried using all 3 optical inputs on the amp - reassinging them to "DVD" - but to no avail - still no sound. Ideas guys Or could I be looking at a dodgy switch in the amp - return to shop ?