1. With all power off to everything, discharge the test point I plan to
probe to ground. In other words , I treat it like a big capacitor. As
we know , even with all protection in place, if you "get across" a big
cap in a DUT you can be on the way to the undertaker
You're right, but it doesn't have to be big, or even a designated capacitor.
Mind the parasitics! The CRT with its parastic anode capacitance is enough to
zap you big time.
Cheers, Kuba