Ok, so here's the new scenario: I might buy a Beseler 23Cii from a guy down the road. It's cheap ($65) and it's got a color head. Now, I don't do color enlargments, but maybe someday.... Anyways, the enlarger was left behind by a former owner of his house and it's been in his way ever since. We plugged it in to test it but it doesn't seem to work. The power supply hums slightly and the timer seems to work, but the light doesn't come on. Pulled the bulb and it looks ok. Am I doing something wrong or do those power supplies go bad? Where should I start? I told the guy that I'd check with you all before I make him an offer on the set. Thanks in advance.