Hi! Disconnect power, open up the unit, give EVERY chip you see a thumb push (chip massage) but be careful not to break the boards! This worked for me, I've had the same problems. I found that one chip wasn't seated right in his socket (which seems to be typically for these old machines...) Hope this helps, greetings, Elmar.
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Re: Intermittent problem
2007-11-01 by elmbeatz