I just got a couple defective units for free, one has already been partially caniballized, the other one is in tact.

Problem 1) The controller seems to be stuck in "right" position. I can't go up, and its sometimes a problem to go left. The jump button is also pretty skitchy, and works only when it feels like it. I know its not the controller though, because I have tried several different ones, and all come up with the same result. How do I fix this?

Problem 2) The console spontaneaously resets or shuts itself down. Is this due to a faulty power supply?