What I got was an awful squealing sound out of the fly and yoke
I removed the plate cap off the HO tube and could still hear some arcing which turned out to come from one of those integrated circuit like things (I'm not sure what those are called?). So I removed it, cleaned it up and replaced the individual components. (seen in the next 2 pics) But after I put it back I still had that awful sound coming from the yoke and fly.
Then I removed the horizontal oscillator tube, reconnected the plate cap on the HO tube, and injected horizontal from my B&K tv analyst where the arrow is in the schematic. Then everything worked (next pic) so I at least knew the fly and yoke were ok, and the problem was with the oscillator circuit.
Then I spent a lot of time poking around the oscillator circuit with the scope and vtvm trying to track down the problem. I eventually gave up, fixed the remote control stuff in that GE console with the rf remote I have (which I'll put in another thread) and didn't come back to the Philco until today.