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John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum > Tech and Marketplace > I need help with my game! - Technical Discussion (Moderator: AgentX) > HELP - Pacman with scrolling garbage on display - I have video of problem
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Author Topic: HELP - Pacman with scrolling garbage on display - I have video of problem  (Read 2198 times)
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carniello
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« on: December 17, 2016, 02:48:05 pm »
Video of problem here:
https://drive.google.com/drive/folders/0BxuAPIQRIP_Kdjh2NDhGWVYycDQ?usp=sharing

Ok, the problem started to dissapear after being on for and hour. We left it on all night and now problem is back.

I believe the monitor is ok. I did not change caps on main board, I think it might be filter caps.
Has anyone ever seen this problem?

Thanks,

John
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P-feif
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« Reply #1 on: December 17, 2016, 07:05:21 pm »
If you left it on and the problem got better then it indicates that heat expansion might help it to get better. In that case I'd pull the board and look for a bad solder joint and probable touch up as many solder joints as I could. Got-a start some place.
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