Galaga weird issue: colors pulsing

gauze

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I just noticed something today when I fired up my Galaga, the blues in the "bee" wings and the greys in the Galaga mother sprites are pulsing from lighter to darker about once a second, and it's like a gradual color change not like flickering back and forth between 2 colors. I had someone else look at the screen to verify it wasn't the medication I'm on. Any idea what is going on? I have the power going through a UPS which should filter the power signal a bit that was my first idea...
 
I tend to think it's the board and not monitor. Since it's just some objects that are pulsating.
Maybe it time to recap the board? A dried cap might cause what you are experincing.

http://cgi.ebay.com/GALAGA-CPU-BOAR...575?pt=LH_DefaultDomain_0&hash=item53db234de7

ok thanks. I asked bob roberts about this cap kit once when I first got my Galaga asked what it was for "it's for replacing the capacitors on a galaga board" so I followed up asking "yes, I know but what type of problems would this solve?" and he never answered me. I didn't think it was that dumb of a question.
 
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