Cd tray not staying closed

There is a kill switch that is hit by the tray when fully closed, could be faulty or a wire off

The gears have probably come out of sync, meaning the tray is riding on the limit switch. You need to remove the deck, dismantle and re-sync the drawer mech. Check the limit switch isnt bent, it's quite flimsy

either your set does not recognize the cd or your lens need to be replaced the age of your set has lot to play if it is old satrt shopping for a new set.anyhow have a tech look at your set.a look on the wire ribonthat leads from the body of the lens the pc board will not hurt probably it is damage.good luck.

There could be damage to the tray contact switches
(these tell to the control unit the position of the tray - open/closed), so that the control unit can start/stop and reverse the direction of the tray ejector motor.

These contacts are located somewhere underneath the tray (usually near the front unit cover), and since you mentioned that the tray was bumped while it was open, it is possible they were damaged. Also, the behaviour of the tray suggests that the control unit can no longer tell whether the tray is open or closed so it operates the tray motor in a wrong manner, which, again, points to these same contacts as the possible cause.

Repairing the contacts may be a somewhat delicate procedure, first you need to locate them (it may require partial disassemby of the tray mechanism), if they are bent a pair of tweezers might do the job, if there's hard damage, it's probably better to replace them (scrapped CD ROM units or a dead CD unit might be a good source, they just need to be of the same dimensions).

There may also be other causes for this malfunction, i just mentioned the first thing that i would check.

Hope this helps somehow.

regards

3rq8 (Triarcuate)

check if the power hubs on the back of the back of the drive are hooked up right if they are un hook and hook back up while your pc is off

I would suggest using Servisol Video 40 spray to clean any contacts inside the machine.

Try using a CD cleaner. Generally this sort of problem occurs due to dust accumulating on the lens. The CD cleaner comes along with a solution.just spray on the CD and allow it to play in the CD drive. Sometimes the problem might even be due to a virus. Check whether your anti-virus is up to date.

Some small item would appear to be obstructing complete closure
With the drawer open take a good look in side.
Also near the  open button you  should see a small pin hole[sometime on the back of the unit]
 This is the emergency eject device in case you get a jam and is operated with the end of a paper clip.
give it a poke with the drawer open  then again closed
See what happens

Sounds like the tray position switch has gone wrong.

likely yes. does not sound like coincidence. try this: search ebay for an AS-IS item for $1 and use it for part-swapping. first to swap-the main circuit board holding the micro chip.