We took apart a PS3 60 GB because of the red - yello- green then red freeze, when we put it back to gerther, it works except that the Blue Ray is frozien and will not accept a disk. When we had it open we took out a game disk by sliding it out with a smal screw driver, it did not seem to bother anythingm based on sight and sound. What should we check when we reopen it to get to the Blue Ray (making sure it has power is on the top of my list