It COULD be the gun switch. It stops, you cycle the power, you obviously reset what you are doing physically in the process and get a new grip on the gun switch which just happens to start working again after the power cycle. I doubt it's that simple but I'd make darn sure first before I tear into boards and whatnot.
Dan from Raleigh, NC
If it's stupid but it works, it's not stupid.
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"What is your host's purpose for the party? Surely not for you to enjoy yourself; if that were their sole purpose, they'd have sent champagne and women over to your place by taxi." P.J. O'Rourke