The new Honey Amp section of the forum is open for posting!
this is the schematic that I found, sorry I cant seem to get the PDF to have the correct orientation.
All of the transistors are okay, I replaced R77, R79 tested unharmed.
When you say current limiting bulb, is this just a bulb with a lead off of each contact to act as a dummy load?
When you say output rail, is that the terminal strip that connects to the speaker fuse?