How can I fix the shoulder button (R1) on my PSP?

Hi - if the PSP is still under warranty, return it for replacement.

If you don't want to do that, then there's a guide to opening your PSP up here:

http://www.llamma.com/PSP/PSPTearDown.htm

Doing this involves removing a label that invalidates your warranty though, so your choice!!

I would guess that there's just a bit of friction in there - try cleaning the plastic switch part and look for any left-over plastic 'pips' from the molding process. If you find any, file them off gently.

Hope that helps you!

Blackhole
February 2007