i fixed this prob in my psp by taking out the small clear rubber connector between thE analog stick and the pcb and cleaning it with a damp cloth then drying it and putting it back in... (be sure to put it back in correctly) NOW THE ANALOG STICK IS WORKING PERFECTLY :-) PSP 1000 Buttons Replacement This guide should show you how to do it. You might only have to follow up to the end of the second page (The end of the Front Case).
