I've had this problem for several years now, in fact pretty much since purchase, but recently it seems to have gotten worse. Basically there is almost no sound when I switch it on, just v. faint from the center channel. After a couple of minutes there is an increasing static sound that then diminishes as the desired soundtrack comes up in volume. Take about a minutes or so for this static to clear.
This happens on all channels (DVD, tuner, Cable etc) in the same manner and is always worse when the unit has been powered down overnight. Switching between surround modes (or even stereo) does not affect the problem either.
Never done anything about it at this point because the problem always goes away anywhere from 2-3 mins to max 5 mins and I'd read on these forums this model had a lot of glitches anyway. But it seems to be getting gradually worse with age.
Any ideas? Cleaning/static issue? Firmware upgrade? It's a sensational amp otherwise, would love to get many more years use out of it.