Caps letting loose is one reason why I don't want to power it up even at reduced voltage for any length of time until I can nail down a potential issue. I just can't find anything.
This chassis was a train wreck (dirty, filter cans busted off the mountings), but all the components appear to be original. I get the feeling that this set was sidelined originally by this issue because the HV adjustment was cranked all the way down and the lead to the candohm was dangling as if someone tested it....it tested good, and said "beyond that I don't know what the hell's going on".
(yes, I replaced it anyway
)