Just got this vintage system.When I press play the door closes and the cd goes up to the mechanism and the cd spins for about 5 second.The Cd them drops back down the door opens and the tray comes out.Is this a common problem and should I be able to fix this.The mechanism that holds the laser only move backwards if force is used but will slide forward as it should. Any help would be great.I also have the beocord 5500,master control panel,beomaster,audio terminal and 2 beovox 45s.I want to get the turntable.Really want to get this system up and running. Thanks