I help a friend repair old vacuum tube radios, transmitters, etc. Myself, I'm afraid of anything with more than 12 volts, but he's shown me that even smoke comi

I help a friend repair old vacuum tube radios, transmitters, etc. Myself, I'm afraid of anything with more than 12 volts, but he's shown me that even smoke coming out of a radio isn't a show-stopper as it helps you track down the problem. I've learned the subtle hatred of silver-mica capacitors, and invented a technique to track down the leaky ones. Also, we fixed a few HP 5061 Cesium Beam Atomic clocks. So I'm now a Quantum Mechanic ;-)