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DuMont RA-112
Did you replace the high voltage filter caps? These are the paper 500pf at 10,000 volt caps inside the high voltage compartment. You will find three of these and they are usually bad. These caps, if bad, could kill the flyback! I am in the process of rebuilding a RA-112 and when I get home, I could post some pictures if you like. When you replaced the filter caps in the black cardboard tube, you need to reuse the tube to keep the cap above chassis ground. You do need to check resistors to see if they are in tolarence. I found several in my RA-112 that needed replacement. Yes, you do need to bring the set up on a Variac, you may have made a wiring error! The set can be run on the bench, but you should leave the horizontal output tube and the damper tube out. You should connect a speaker and hear sound with an antenna.
More info. when I get home if needed.
Frank
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