Hi all. i'm troubleshooting my CRT monitor and need a schematic to go. I think it's the jungle IC (STV7778) but I gotta check out other components before I replace that 42-pin chip. Symptoms: Loss of vertical sweep (horizontal line across screen) that quickly returns to normal. Later this transformed into a vertical and horizontal shrinkage of the image, accompanied by decreased brightness. It's intermittent and sometimes returns to normal, sometimes it doesn't. I've already resoldered all cold joints. Still no dice.
