Hi Eric. Yes I have the schematics, thank goodness. Guess I'll have to dig in. The 1b3 glow is barely visible on the other chassis like you said, but on this one, nada, even with the lights in the room (garage) out.
The set has clear sound and tuning, and I hear the horizontal come up also. I'm going to test the transformers for open circuit next, then I don't know. I guess it'd be a waste to swap flybacks, huh?