Well, I took the switch apart. The best I can tell is it is probably some sort of overload switch, because it has a type of breaker in it. Interestingly, the problem was not a loose pole. I could not figure out what mechanism would trigger the overload switch to break; so, I took the two wires that fed into the switch and just connected them together (bypassed the switch). Now, the manual mode works just fine, but the auto mode doesn't work at all. Since I only need one mode to work, and we don't constantly feed heavy volumes of paper to be shredded, I'm going to leave everything as is, instead of trying to figure why the auto mode doesn't work. Good luck to you, though. Maybe your problem is diff. than mine.
clay, September 2009