Hi, the cd loading mechanism is prone to failure and a replacement radio is the best option, there was a guy on ebay. uk that was offering a repair service for this very problem but I have just been trying to find his advert but it doesn't seem to be there anymore, the single disc models are selling here for around £45~60 ($80~110) you might find a good audio repair shop that can replace the cd loading mechanism for less??
nigel, May 2008