I recently aquired an elderly but immaculate Beogram 3500 CD player. It is very choosy about which of my CDs it will play and which it won't. With some CD's the track lights illuminate, but it refuses to play, on others it tries to read the CD then just switches itself off in disgust. There is no correlation between the condition of the CD and whether it chooses to play it or not, it seems almost arbitary. Rejects account for about 70% of the discs I have tried.

Anybody got any ideas on a fix?