Got my hands on a NAD 7130 Receiver, in mint condition, except for the audio output I really like this unit, wanted to always have one and I don't believe this issue to be serious. The unit powers up, however I don't hear a relay.. which I found to be curious as I don't see one either. All fuses on the main board appear to be good. All else, digital tuner board, and the other switching functions look great. There are jumpers and they all seem to be in the proper connectors. Not sure why there is no audio but an audible pulse is noted at the speakers at powering up leading me to believe the issue is not in the amplification circuit. Any assistance would be appreciated and speculation welcome Thanks... AKers!