Yep,

The 12AQ5 is the keyer. Figured that one out last night. I'm slowly
figureing out this thing a little bit at a time. My first amplifier
repair so gonna take it nice and easy. Looks like the HV relay is the
only prob at this point. My Realistic toob checker doesn't check the
sweep toobs. Probably just as well to leave em alone.

regards,
Bob
N9NEO