Build Your Own Arcade Controls Forum
Main => Monitor/Video Forum => Topic started by: unix4hire on March 17, 2005, 09:30:10 pm
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Hi, I finally got my pacman working by sending my board off to twobits for repair. Now my excitement disappears after playing for about 10-20 minutes because the monitor/screen starts getting all intermittently jiggly and eventually turns into a solid vertical line in the center of the screen. Is this what I fear it is? A monitor going out? Or something more benign?
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sounds like a cold solder joint somewhere in the horizontal section --get a real bright light, a magnifying glass and have a look around--you're looking for anything that has separated from the board or a solder joint with a hairline crack in it.
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Nope, it's a vertical deflection collapse... remember a Pacman monitor is rotated 90 degrees from a TV set.
Besides cold solder joints, your yoke wire may have simply come unplugged from the board or from the yoke. Check the Yellow and Green connectors.
More dire, would be a short in the vertical winding on the yoke or part of the vertical circuit is dead.
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Sounds like you have a Wells-Gardner 4600 series monitor. Yes, it has numerous bad solder joints that cause the exact problem you have described.