lol
the cdrom should move easily
the duo is hard geared and will break if moved (all gears in place)
Well I wouldn't say it moves easily, but it wasn't exactly difficult either. Then I plugged in the unit, opened the lid, pressed the lid switch and pressed play. The laser did not move, but I heard it try. The laser did light up red, but I didn't see it focus. Maybe your eyes are better than mine are.
I started following BlackandBlue's laser replacement guide. I am able to see all the capacitors, gears and, ... well all the guts. The capacitors all look fine. No leakage, no swollen tops, and for something that is 20+ years old it's actually very clean inside. If I look at the gears it's plainly obvious that the center gear is a different colour. The outer two are your typical white, but the middle one is an ugly yellow. The outer ring of the yellowed gear looks fine. All the teeth are still there, but the inner ring (smaller) that turns the spindle to move the laser looks like all the teeth have been shortened. I don't see any little bits of gear anywhere in the housing though. I took my precision screw driver and poked at one of the teeth on the outer gear and it broke off without any pressure.
So you guys are correct about the gears. What's the best way forward now? Should I bother with a complete laser replacement or just buy a gear off Keith Courage?