Star Wars shaky video

Hi Guys
I have been repairing a Star wars pcb that I bought off ebay. I dead so I removed the avg board and self test started to work. I checked the avg board and found some damaged traces, repaired them and the board now passes all test and plays fine except the video is shaky. In self test you can see small steps in the vertical lines on the grid screen. I guess its a bad cap somewhere in the Y section but I can't find it. Has anyone had this fault before? I have checked all the caps have both legs still intact, no noise on the +15 or -15 lines.

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Received on Sat Jul 8 14:36:43 2006