I recently found this receiver at a local thrift store a nice find. When I plugged it in there is no sound from either channels. So I started digging in. I checked the fuses and they are all fine but I replaced them with new ones anyways. I figured next it may have been a power supply issue but I after running test on the board there are no issues I could spot. I'm not sure where I should go to next. Any help whould be appreciated. Thanks!