I guess that wasn't the whole issue, since bias won't adjust unless I lift D104. I also have a full sinewave with it lifted. Something is still tripping the protect circuit. Q116-118, R162 and D105 have been replaced.
Reinstall D104. Remove and then replace the following transistors, one at a time in the order listed. Which one is the first to allow the amp to play when it's out of the circuit.