Can only get my onkyo 6cd changer to work after a period of no use is to hold a warm hairdryer in the open drawer for about 3 minutes and the it will work.what could the problem be.

SOURCE: onkyo c707chx...

This is an easy fix if you are somewhat handy.... The belt for the door/tray is slipping. If you remove the enclosure and face plate, you will see two motors below the disc drive. Press eject while observing the pulley to the left. You should see the problem with the motor shaft spinning and the belt slipping. Replacing the belt is possible without any further dissassembly. Simply bend some light wire into an L shape and you should be able to hook both pulleys and lace the new belt on. As far as obtaining a new belt I decided to do the simple thing and use a slightly smaller rubber band. The repair has held now for almost three months and the player is used everyday. Good luck.