A friend of mine has a PS3 that supposedly will play games and DVDs fine, but won't play Blu-Rays anymore. Considering that was its main use, he's offered to sell it to me for cheap and I think I'll take him up on the offer. So my question is this: if I do buy his PS3 and attempt to fix it, what do I need to replace? I'm willing to spend the money to get a whole replacement drive, but if I can get away with spending less on just a laser then I'm all for it. Thanks in advance!