On Monday, March 13, 2017 at 3:40:12 AM UTC-4, wrote:
"LOL! I remember when I was just getting started in TV repair and my dad had a 40s radio in the shop for repair. In horror, I saw him put his finger on the "plate" cap of the IF tubes as a poor man's signal tracer. Of course, my first experience with a true plate cap was my finger on a horizontal output tube.. "

I bet you learned some respect for eletricity.

For me it was the cathode of a damper tube, which has even more. That SOB burned my finger all the way to the bone, and cauterised it at the same time.

Anybody who does not believe the above should try it themselves. It's happened to me several times - and boy, do those pinpoint burns hurt for days.