I just starting working on mine and I have a question maybe you or Winky Dink can answer.
C98 is supposed to be a 0.03 going from a flyback winding to ground. The other side of that winding goes to the chassis. That's the little green wire I've circled.
However, on mine the flyback lug that C98 goes to has a wire that snakes around and is soldered right to the chassis
So C98 is really going between ground and the chassis on my set or the flyback winding is a dead short