my psp 1000 was accumulating dusts for around 4 months. well, it's kind of weird, when i play the game for a while,(no regular time) then the item will automatically power off, then you cannot power on. But after you try several times, the screen might come back again, then you may still play a while, then the problem happens again. sometimes even cannot power up. The problem exists when i using the charging cable. so i am really don't know how to fix that.