I have a Ryobi 16/32 drum sander I got it about 5 years ago, (free!) and after rebuilding the broken paper clipping system, I put it into use. After 4 or 5 hours of run time the circuit board shorted out, disabling the conveyor belt system. I found a source for Ryobi parts and bought a new board, installed it and went back to work. Now after 2 - 3 hours of run time it has fried again. At $40 bucks a board I'm not to thrilled at the thought of replacing it again (with my fingers crossed), and was wondering if any of you has any input on my situation.