Things You'll Need
Instructions
Use the screwdriver to detach the face plate from the bottom of your PSP. You'll need to remove the battery pack. There are additional screws underneath the battery pack that need to come out to take off the face plate.
Look on the bottom side of your face plate. You will find four small bronze-colored rectangles lined up together. Take your damp cloth and wipe over this section. Wait 30 seconds, then wipe it off with a dry cloth. It is important that your cloth is just damp and no water is leaking from it.
Remove the plastic piece that covers the small bronze squares on the right side of the analog stick. Clean these with a damp cloth.
Put your PSP back together the same way you took it apart. Don't forget to screw the battery pack screws into place, or you will experience other problems down the road.