Wonder if anyone can help here. My father has a NAD C540 CD player and on most occasions, when you press the 'Open' button the tray opens part way, then immediately closes again. However, sometimes the tray will open without any problems or if you play the CD that has been left in the player. Any ideas much appreciated - I'm off home today to visit them, so hopefully can take a look at it whilst I'm there. The player is long out of warranty. Any help appreciated. Thanks!