Help! Used above DVD player about a week ago with no problem (DVD left in there though). When I came to switch it on this evening its making a horrendous screeching sound. It makes no difference whether the sound is turned down on either the TV or the DVD player (it has a surround sound system with it). Haven't yet tried to see if I can get DVD out as the sound is so bad!! Will wait until its not so late so as to not pee the neighbours off Any ideas???