yes i tried everything form unplugging unit,all cables removed,micro. reset and also network reset... nothing so unit sent in for repair/replacement
i think you may be right>>>> lack of headroom @ ref. may be the problem ..that and too many beers, in a larger room than this avr is designed for???unit was @ ref or below for superbowl itself,it was post game with some dvd concerts that done it...that and +5 or so above ref.....so will a 2 channel power amp do anything for headroom?? before i do any more damage to my hearing...
and keep in mind it is rare i do go above ref but @ ref i feel i am missing something(i should have paid the extra for the 4310 or 4810)
