TommyTorty10@TommyTorty10@infosec.exchange
Next are the circuits for each individual display. It looks like they use a lot of ceramic caps. Some of the non-ceramic capacitors I might be worried about look similar to one I measured in the high voltage card, and it was dead-nuts on, so I think they're probably fine. There's some orange-drop caps, and on one card, they're blue instead of orange. There's no obvious signs of service or repair, so I think the color change would just indicate a change to a new order of capacitors at the factory. There's some small diodes, which given the age wouldn't surprise me if they need replacement, but they're hard to access, and everything else seems pretty good, so I think I'll plug it in and see what happens.
TommyTorty10@TommyTorty10@infosec.exchange
And we have life! One tube doesn't show a line like the others, but I see a dot appear on it when I turn everything off, so it might just need some adjustment