Thanks for the advice. I just heard back from the owner that he hasn't used the board in over 2 years and it didn't act that way when he last used it. I guess the only other question is will "cleaning" the board really solve the problem or likely to be a problem in the circuitry requiring more extensive/expensive work? Also, do these boards have a grounding problem? Eg, the power cord has clearly been soldered into the back and isn't grounded. Therefore, maybe everyting inside the board not grounded either. Seems like I might be able to fix such a problem.