My cd changer is in the glove box. When I insert the cassette with the cd's, the display on the radio on the dashboard does not recognize that there is a cd loaded, and nothing happens when you push play, fast forward, or any of the other cd commands. The radio works with no problem, and the cd cassette will eject with no problem, it just won't play. How do I remove the cd changer and put in a new one?