Hi, I have a TEAC DV-L800 DVD player as part of a TEAC home surround sound system. Recently the unit has stopped playing most of my DVD collection which it has previously played before. The unit sounds like it can't read the disc's as it just continuously spins unable to load up the menu or movie itself. I have run a cleaning disc through the player but this hasn't solved the problem. I would be very grateful for your assistance.