I love it when this happens. You see something for dirt cheap, and then are told that it is broken. But then you take it home, then clean it or use a different cable, and it works just fine.

My favorite was a model 2 SNES (SNES Jr.) that was sitting in a box in a pawn shop and said "Not Working." It didn't have any cables with it, but it was listed at a measly $3 or $5, so I decided to risk it. Took it home, and it worked better than my primary SNES.