Hi all! I've got a sudden problem and would advice before I buy a replacement unit. I've got a DVD movie which all of a sudden will freeze in the same spot. The player (a Yamaha blu-ray player model BD-S477, now discontinued) would not even respond until I pull the power cord from the socket! I'd plug it back in, get everything set, play the same DVD and would still freeze in same spot. I used a disc buffing / repair / cleaning machine on the disc, no help. I do suspect the disc could have a deep defect which I can't see. But why the player just freeze up?