yes i read the manual. so don't mis-judge me would ya please? i hate that...

anyway, the convergence control pot on the back of the video CRT neck board (assuming you know what that is, remember the part about mis-judging) does not function.

this pot is electrically connected to one of the CRTs grids to ground. the pot reads the same as the pot on the LC 550 analog board. so it isnt the pot. only thing i can figure its a low or missing CRT grid voltage somewhere. has to be.

there are NO other bad parts on the analog board itself. i tested all the resistors, they are within tolerance, caps are good, even the ceramics and mylars. Diodes statically check fine, but that dont mean they arnt breaking down under load. there was 2 buldged looking electrolytic capacitors that were under the shield near the video output IC, they ESR and LSR check fine, but i replaced them anyway. no difference.

so the only possible thing that can be wrong in the analog board is a bad fly, or a bad IC somewhere since i cant physically test those without a USEFUL service manual...