[offtopic alert, though I am following this thread with interest]
@daver2 , you seem like the kind of person who might have a list of tantalum bead capacitor values for 4010-series terminals and 405x-series computers... I have a 4006 whose HV and Z-axis board has popped a tantalum or two, and a 4051 that I haven't dared power up yet. Is there a handful of values used in these machines that I could buy in bulk --- that way I can replace failures one by one, or perhaps replace every capacitor in one fell swoop? (I'm not sure what would be wisest.)
Slightly more related, a friend sent me
this Reddit thread where a mysterious catastrophe has attacked the display: the entire coating of the screen is gone. It's a window now. I sent it to some folks at the VintageTEK museum and their guess is that the seal between the CRT bell and the faceplate failed: this caused a gust of wind to sweep the coating completely away. (By contrast, a vacuum failure at the neck usually focuses a blast at the centre of the screen, which creates a kind of "splat" scour pattern in images I've seen.