First Post-Restoration Glitch

[3Guncolor]

Check the vertical output transformer for a primary to convergence winding short. I have had a few fail in the last few years just like your description. It seems the insulation fails and the high voltage from the vertical output plate punches through. I have found if you cut the convergence winding out of the circuit the vertical circuit will operate but there will be no dynamic convergence. The other device with three wires is the vertical integrator and they can fail as well and cause a flat line with no vertical sweep. Sorry to hear your set is in trouble so soon and please be careful with your CRT don’t burn a line in it.
Steve