if you take it apart it will void the warranty it was with sony... since there is a sticker on the back of it you have to remove to open the case and when you do it'll say void on your ps2... I know this cause I have done it w/ a ps2 my lil brother spill coke on when he and his friends were drunk.... but more than likely there is a build up of dust and crap on more than the lens.... also on circuit boards and around the fan... just a lil FYI