My dead oscilloscope is still dead. After spending some time poking around the innards, I’m starting to think the issue is on the high voltage side that provides power to the CRT. I’ve checked the voltages at connectors where the PCB is labeled with voltages, and those match up. It seems like the rest of the scope is probably working except for the CRT side of things.
I think at the moment, the scope is beyond my ability to fix. Guess I’ll shelve it for now and maybe go back to it when I’ve gained a few more skill levels and higher level items.
Off to the next project!