Cool, thanks.
It turns out this set has had a few more repairs than I first realized. There's an extra electrolytic can under the chassis and a few other replacement parts scattered around.
I also found that in addition to the fusistor and thermistor all 3 sections of the filament dropping resistor as well as the pilot light are open. What the heck happened to this set ?!?
I figure one tap of this resistor was cut when the 6.3v CRT was installed.