Tom
I sent mine 3802 back to the local (New Zealand) agents as I can hear hissing too. They came back saying that they tested it for 3 days and it was normal level.
So I hooked it up in another room in case of anything electrical from around the TV - just the amp, speaker cable and 1 speaker...
My 3802 seems to have some interference. When any input is selected, there is a slight hissing from the tweeter. The volume of this increases slightly if main volume is increased. If an input on the multi selector is chosen, then it can be heard in the hissing. What have I done wrong, or do I...