My psp slid 40 feet down a hill on the frozen ice covered ground into a pond in the back of my house. I took it apart so ever thing could dry and not 2 things don't work. Notice I said not 2 things work. One thing is broken and thats the right button on the d pad. The d-pad you press is fine, like on the face plate but the one that connects to the motherboard. The sticker thing.
Here is a pic i found on google. Look at the d pad area, not ont he face plate but on the psp itself. The gray and 4 black dots next to the lcd.