How to remove corrosion?

[goodie]

I've got a Snes-mini that doesn't seem to work. I took it apart and found that the cart slot is covered in corrosion/rust/something. What is the best way to remove this?

[ttsgeb]

An old toothbrush, and a mixture of baking soda and water is gonna be your cheapest way.

[hailrazer]

Radio Shack sells a cleaner for electronic Pcb's.

[goodie]

Well, I've scrubbed it down with the baking soda mixture. Still nothing but a black screen. I've now sprayed it with contact cleaner. Any other ideas for reviving a dead Snes? I've already checked the fuse, BTW.