Mighty Monarch of The Air

[old_coot88]

Originally Posted by VintagePC

Hmm... it might well be an inaccessible direct connection between the coils in the yoke itself.

The connection is most always inside the yoke housing.

If that's the case, the best you can do for steps 2/3 is test across the yellow arrows. the result can indicate if coils are open.

Yep, but he's gotta disconnect one end, either the ground end as you suggested, or the top end. Doesn't matter which. While it's disconnected is a good time to also check continuity of the secondary winding of the transformer.
To the OP (original poster): is the capacitor across that winding (shown with dotted lines) actually in the set? If so, have you replaced it and/or verified that it's not shorted?
oc