I've messed around with a lot of old tube radios, and Injunjoe is spot on with grounding the chassis and your compressor nozzle when blowing it out. Also, if it hasn't been powered up for 40+ years you probably want to hook the power through a variable transformer or rheostat, a dimmer switch will work, and bring the voltage up slowly. I let the smoke out of some really nice old radio boards before an old-timer filled me in on that. Good luck!
Bookmarks