So I picked up a Sega Turbo sit down cabinet with a vertical collapse issue on a MC-2000. After replacing the resistor R-416, and transistors at Q401 and 402 and the cap at C408 I got the picture back to full size. Now its showing a black and white field, no color with a constantly scrolling field. After trying a full range of adjustments on the pots to try to get some kind of response I'm begging to wonder if a universal chassis could be a way to go. Are there options available? Am I missing something simple? I have attached the required ambiguous screen photo. What do you guys think?

