I bought a used Philips CDR200/17 CD Recorder/Player with dual trays. The player side works fine. The tray jammed on the recorder side. I took it all apart and found that the tray had come out of the track so I put it back in and now the tray opens/closes with no problem. However when I load a CD it will not turn and thus I get the error message NO DISC. I kept the cover off the unit to try and see what was going on. When the CD tray closes, there is a metal arm with a plastic spindle that drops down (it is magnetic) onto the centre of the CD. If as soon as the cd tray closes, I raise the arm, the CD starts spinning and unit then recognizes the CD and everything works OK. I am not an electronics guru so am wondering why the CD won't spin when the metal arm & disk drop down onto the CD? Any help appreciated.