Things You'll Need
Instructions
Remove the memory stick and any games in your PSP. Open the battery casing and remove it as well.
Unscrew the five screws that hold the faceplate to the console. Four are located on the back side, but one is underneath the screen on the bottom edge. Be sure to place these screws in a safe place, as they are very small.
Pull the plastic top of the "Start" button off of the PSP. Using a small clean cloth, remove any dust or residue from the top of the button head.
Wipe the area around the button as well, especially if you see any dust. Be careful not to touch the screen.
Replace the button covers and faceplate. Screw it back on, and test your PSP buttons.