Then it's a good chance you need to clean it, really really well, and if it doesn't work still, it's probably toast.

Try and go sell it to a game shop while it still works. I brought in my old PS2 when it first came out, it hardley worked anymore. Luckily, it worked long enough for them to test it and I got $65 for a machine that worked maybe 15% of the time.

And I still feel good about it.