JVC HR-3330 with tracking problem

[david winter]

Hi,

I almost totally recaped this old VCR which wouldn't play any VHS. Other than elan caps, the rest looked really done with corroded pins. I changed almost every cap (all boards except one I couldn't remove, located vertically right to the cassette deck. The servo board is fully recaped and I made sure to use bipolar when necessary. After putting everything back together, I tried a good working VHS. A nice color picture showed up for about half a second, which immediately turned B&W for another half second and then I got static. The tracking knob on the front side does't help but seems to work. It looks like there is a tracking problem and I wanted to know how I can fix that. Is there a good documentation about how to test and eventually align ? Thanks in advance.