Does the empty tray start to move and stop after a little bit of motion, or does it not even try to start o move? Perhaps a motor tries to start and stalls.
When you push down on the tray is there any noticeable downward movement of the tray (not in the opening direction)?
Is this a changer, or a single disc player?
You could try carefully clean then lube the gears and the track/slides, and look for any binding points or burrs that might impede opening.
If it fails to even try to start to open look for a sensor. Also, check all ribbon cable connections and perhaps clean the contacts. I've seen strange behavior on DVD players (and other gear such as even dishwashers
) that was traced to corroded ribbon cable contacts.
