Well, this one stumped me for a long time. I even went and replaced loads of resistors that tested good. But there turned out to be 2 problems with the picture:
1. Looking in the 1st schematic I posted, that C7B I put in backwards
, this caused the "crappy video", strangely it didn't explode, but I could see it was bulged out and I put in a new one.
2. And this was the really tricky one, what was wrong with the sync, looking in the 2nd schematic pic I posted, the cathode of that sync clipper tube needs to go to ground, not to the heater, otherwise the 6V AC on the heaters seems to get mixed in with the sync pulses. Connecting it to ground fixed the problem.
This didn't trip me up like the other problem, but I also pointed out in that schematic on the 6SH7, pin 5 is the cathode and pin 7 is the heater, the schematic has it the other way around. This tv had so many resistors wired to the wrong place, that I basically rewired it following the schematic almost like putting together a kit. The cathode of the 1st sync clipper tube was probably wired correctly to ground to begin with.
Next pic is the picture as it stands. The horiz still takes about a minute before it's really stable, but then it locks in good. No issues with the vert at all.
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Now for the sound, first I thought to put the signal generator on the grid of the 1st audio IF tube, and just tweak all the IF transformers for loudest volume, but it was still pretty weak.
Then I hooked up the full blown early 1950s RCA sweep generator alignment set up I have and was able the get the picture on the scope for the discriminator transformer alignment just like it should be (ignoring the fact that for some reason the marker-adder decided it only wanted work set to reverse polarity) But, when I moved back to the 3rd IF transformer I could see the peak was set to twice the IF frequency, and I couldn't get it down much below 31MC. The sound section is in the 3rd schematic I posted...