[drh4683]

Is the set at least responding to remote signals? Do you hear the volume stepper relay clicking when you press the on/off volume button on the remote? Do any of the other pilot relays click when you press the remote buttons?

For what it's worth, sometimes the volume stepper relay gets stuck, not from lack of lubrication, but because the friction tape the factory wrapped around the relay armature as a noise dampener gets a little tacky and thus "sticks" to the stopper bracket when it's in it's resting position. It will literally get stuck within hours even if you pop it free if you don't clean it or re-tape it. I just wrap a new piece of electrical tape around the armature to stop the sticking. Heres a photo showing the black tape on the armature on the stepper relay (upper right in this photo). Even if this isn't the case, it's something worth remembering as it's been a known troublemaker to stop the stepper relay from working.

DSC04564 by drh4683, on Flickr