Repair log : Omega Race monitor with jitters.

ArcRevival

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The monitor in my Omega Race was jittery. I capped it, replaced filter caps, soldered everything... still jittery. Replaced deflection board pots... still jittery. On one test, I had the monitor pulled out of the game and it was pretty far from the cabinet. Guess what... no jitters. Put in the game thinking it was fixed and it was jittery. Replaced the 2 ginormous filter caps in the bottom of the game and now its jitter free. This one had me going for awhile until I realized the cabinet was causing the problem.

The End.
 
I had the same problem with mine last night but I knew it was fine ten minutes earlier....the only thing I had changed when refitting the monitor was attaching the earth wire clip to the chassis! I unclipped it and the jiggle went. Must have been some kind of weird loop going on.
 
The monitor in my Omega Race was jittery. I capped it, replaced filter caps, soldered everything... still jittery. Replaced deflection board pots... still jittery. On one test, I had the monitor pulled out of the game and it was pretty far from the cabinet. Guess what... no jitters. Put in the game thinking it was fixed and it was jittery. Replaced the 2 ginormous filter caps in the bottom of the game and now its jitter free. This one had me going for awhile until I realized the cabinet was causing the problem.

The End.

Mine does this as well and the only thing i had not replaced was the "ginormous filter caps" in the bottom of the game. I put in an order last week so am happy to see that hopefully this will fix it. Mine doesn't get Jittery till it's been on for a couple of hours of more, thanks for posting this.
 
The giant filter caps only smooth out the 5v and 12v lines. The monitor gets it power straight from the transformer and converts to DC on the deflection board. The DACs get their voltage direct from the transformer as well, they are converted to + and - 15v on the game PCB so I can't see how changing the large caps could sort your problem. Those large caps rarely go bad. You would see AC on the supply to the power supply board if they were bad.
 
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