I just sent my 807 in for warranty repair. Was doing audyssey room correction and the receiver was trying to add a height speaker that wasn't there and would go to error.
On the third try, the receiver shut off and wouldn't turn back on even after trouble shooting, disconnect everything, let set for over an hour and reconnect, nothing but blinking standby light. It even sizzled a bit, Ouch.
Could be 2 - 4 weeks, thank God I've only owned it for 1 yr with a 2 yr parts and labor warranty.