If I just changed the Smith to a stylized scripted Dillon, this could almost have been my uncles radio and tv store! Most likely where I got my electronics interest..
My uncle recounted the first tv he worked on. This did not use the horizontal flyback transformer scheme to generate the CRT's high voltage anode, rather a small neon sign tranformer and diode. He reached in and next thing he remembered waking up across the other side of the room!
Ah, yes, the joy of tube-powered electronics!
I never had quite as close a call as your uncle, but when I built the power supply for a ham radio transmitter back in the early '60's (iron-core transformer and choke, tube diode, high capacity capacitor), I was introduced to the concept of the slow discharge cycle for the power supply's high voltage (600+ volts!) smoothing capacitor. I
was savvy enough to have turned off the power supply before working in it, but didn't allow enough time for the capacitor's charge to dissipate (or think to manually discharge it!), so when I reached into the chassis, my finger was the path I offered up to it to discharge through! In addition to the pain and whole-body flinch that ensued, I ended up with a blackened pit on the tip of my finger, which was a lasting reminder to me for several months to be more cautious!