[davewill]

You most likely have to take it apart & do a visual inspection for broken parts.
Make sure you use a proper philips screwdriver ,the screws are small & strip easy.Here are some links
http://www.pspmod.com/forums/psp-har...epair-psp.html (How To Open And Repair The Psp)
http://www.pspmod.com/forums/psp-har...-your-psp.html (Guide: How To Take Apart Your PSP)
For parts
Divineo: dms3 mod chip dms 3 chip - xbox xenium chip xbox - xecuter 2.3B - x-ecuter 2.3B - chip messiah 2 ps2 chip - ps2 magic 3.1 chip - magic v mod chip ps2