It may need a good service. When I've had problems with mine, I've used "Dust-off" (compressed air in a can), very gently. It helped. The CD63MKII tends to be a very sensitive player - I recently added the Denon 2910 universal player as I wanted to venture into the world of DVD-A and SACD. I found this player to be quite robust - I had a disk that persistently skipped on the Marantz. It doesn't on the Denon. But I still believe the CD63KMII to be a superior player (old technology or not).