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arcade repair
Question from Wayne: Tim and Jonathon,
Hello, my name is Wayne from up in Montana. I just started collecting arcade machines. I own R-type, Strider, Yie Ar Kung Fu (1985), and Avengers (1987). I love your videos and find them very informative. They give me the confidence to work on my own machines. Anyway… R-type and Strider work but I bought Yie Ar Kung Fu and Avengers off Ebay not working. The guy I bought them from knows less than I do about them because he got them in a storage locker sale. I thought I would start with Avengers because it seems to want to work the most. When I turn the machine on I can hear the music play, it will coin up, and I can see bits of images moving on the screen. The screen is very scrambled with jagged lines running vertically. The monitor runs vertical like a Pacman arcade. I can tell from the screen burn that it used to be a Dig Dug monitor. Also when I opened it up I could see that there was a new type power supply and a classic power supply still sitting inside. I checked all your videos and podcasts but cant find anything that really matches my situation. I listened to one where the guy had a star wars arcade and when he turned up the brightness it would go back to normal….so I fiddled with some of the “pots” in the back of the chassis but it didn’t make a difference. I work on my home console video games quite a bit so I’m not really new to soldering and replacing capacitors. However, I was hoping you could give me some guidance before I just started ripping into things. Thank you very much for your time.
Wayne
1 answer
Response from Jonathan: Wayne,
It’s really hard to tell from your description if this is a board or a monitor issue. Probably the best place to start would be with your new power supply. Use a multimeter and make sure that the +5 VDC and +12 VDC lines are putting out the correct voltage. Check out our post on Checking And Replacing A Power Supply for more information on that process.
If you continue to have problems after you’ve checked and adjusted the power supply, you might send us a picture or video of what the screen looks like. This will helps us troubleshoot your issue further. Hope that helps. Thank you for your question and good luck with your repair.
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