i just got a ps3 slim 160gb version and the blu ray drive doesnt work. the disks go in and eject but they wont read. it wont read any type of disks. i put in the disks and the light turns blu. wen i put in the disk, i hear something. then nothing, am i supposed to hear like the disk spinning? is the motor or the laser bad? i went on ebay to find a replacement drive and i dont know which one to get for my model. i dont know what CECH model i got. ca someone help me find out which CECH model i got?