Oh, I am careful. I am quite aware of the remaining charge in a
display as well as how to discharge it (“shoving a grounded
screwdriver up under the anode cap” lol) should the need arise (which
it has not).

Please don't be insulted, but anyone who describes a safety procedure as
"shoving a grounded screwdriver..." and adds "LOL" should just discard the
TV and purchase a new one.
If you are lucky enough to repair the TV without injuring yourself, the TV
may become a fire hazard if it is not repaired correctly.

Chances are the TV originally just had a bad solder joint. Moving the power
cord flexed the circuit board and opened and closed the bad contact making
the TV work intermittently. Now one or more components has opened or
shorted and you must hunt it down. You are not likely to SEE the bad
component. You must know which part of the circuit to test, and find and
replace the defective components to make the TV work!