Too fiddly for someone like me simply to be able to use a PSP on a TV screen. I dismantled my PS2 controller once to get something that got stuck behind the L2 button out but couldn't get it back together just to there being so many parts and little pieces that fell out every time I tried putting it back together.
I managed to get controller off a friend who was generous to give me their second controller from the PS2 Hotpack.