I had a problem where it just said "unknown disk". On taking it apart, there was no sign of laser activity. Fiddled with the ribbon cable between the laser assembly and the PCB, and it sprang back into life. Figures. This is the part that receives the most mechanical movement, since it serves the laser carriage. But it's tempermental. It is a clearly visible red laser, which you can even see through a DVD, but beware not to let it shine in your eyes! Now the only problem is trying to track down a replacement. If you give up with any of your machines, please send them to me! clive@pluton.co.uk
Clive Miller, April 2005