I've taken in a broken Sony AV receiver (DA30ES) from a friend. It powers up and then flashes "Protector". Does it make sense to even bother to take this thing in for repair or would it be better to just have a replacement shipped to my friend? There is nothing special about the receiver or the application. Mostly he just listens to the radio through two sets of in-wall speakers. It is part of an AV system so sometimes he'll use the system for TV sound or VHS playback (there's no DVD!?).