Too often caps are mentioned as the "fix it all" solution, which it isn't.
Jitters often indicate bad potmeters or contacts.
Yeah, but when you've already got the chassis out for repairing the joints and checking the pots... it'd be crazy to not just go ahead and do a little "Spring cleaning" and redoing the caps and cleaning the HV diode. Only takes an extra 15-20 mins or so and will help out in the end. I think Bob Roberts sells a full rebuild kit (I should be able to remember this, I JUST ordered one a couple of weeks ago) for something like $11, that's the caps and can transistors...
Caps are an over used excuse though... I hate asking for monitor help because I know the first 4-5 responses will be able the caps... even if you JUST did a cap kit, they'll still tell you to redo the cap kit. Going into HV shutdown? Cap kit... completely ignore the transistors and IC on a normal monitor... Missing green? Cap kit... don't bother with the drive transistor and resistors on the neck (or the IC on some monitors)... Monitor won't come on... fuse blows, cap kit, cap kit... don't bother with the bridge or the hot, or the degaussing coil.
Granted, most of the time cap kits are needed... don't get me wrong, but they really are used as a "fix all".
I have a Battle Zone that was having REALLY bad video issues (BAD jitter and loss of video signal all together from time to time)... I spent a good couple of hours checking and double checking the chassis and HV section of the monitor... ended up being a bad RAM on the game itself that was causing the video issues.
He mentioned in another thread that he's getting weird results from his test mode... I'd clear that up first before I bother pulling the monitor... unless it's already pulled, then just reflow everything and clean the pots (can of contact cleaner sells at Home Depot for about $2.99 a can). If/when you order new RAM in for the board, if needed, go ahead and toss a cap/rebuild kit in with the order... might as well also get a cap kit for the game PCBs as well... never hurts.