GO-7 picture scrunched

mc300baud

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ok, so i've got this GO-7 which has a new flyback and a cap kit. it worked great for a while then one day when i turned it on it looked like the attached picture: scrunched vertically to a middle band about 1/3 of the screen, overlapping and twisted to one side.

i've checked the B+ and it's right at 120v. header pins have all been touched up, gone over the PCB for other bad solder joints and i've checked it on a different tube/yoke combo with the same results.

i'm sure the sync is connected correctly and i can get it stable so it's not rolling.

Randy's flowchart doesn't really go into this territory. what do i try next?
 

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Is that not indicative of a vertical deflection problem? The ole 400 series check ups?
 
i thought at first too that it might be a sync problem but another GO-7 didn't have issues (so nothing from the game PCB or wiring harness) and i can get it to not roll if i have the sync wires hooked up as they're supposed to be but it rolls like crazy if i don't.
 
It sort of looks like the right side has collapsed and the left side has partially collapsed? I doubt that both X401 and X402 would fail at the same time though?
If you had the time, you could swap X401, and X402, if the left side was totally collapsed, and the right side was partially collapsed, bingo, you have your answer......
If no change, back to the drawing board, it would be a free test, only costing the time to swap them......
 
Inspect the area around X401 & X402 for hairline cracks, then test all 3 legs on each of them for continuity to their next point on the deflection board.

I believe the sync problem is being caused by the vert trans problem. Fix the vert trans problem, then adjust the sync.
 
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