drifting

My PSP has all symptoms of a defect analog stick: in GTA the character runs around in circles without me touching any buttons and in Assassins he will walk forward all the time... So I replaced the analog stick, switched on - and the problem persists. I then removed the analog stick completely...

Hey everyone. I'm relatively new to the PSP scene. Sorry if this thread is in the wrong forum. Anyways, I recently replaced my PSP 2000's housing. I finished up the installation and everything was fine until I started up a game and noticed my cursor was drifting to the top left of the screen. I...