Hello, What CD player are you referring to here- what is the Brand and Model please?
Also how long have you owned it for an when did the problem occur?
Thanks for the reply. Is there any chance a disc is stuck or jammed preventing the door from closing?
Also have you tried unplugging the unit and plugging it back in to see if that makes a difference?
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, proposed preliminary try (if have not been done) is to unplug (again) for an extended period of time. Then, press and hold the front panel's ▲ OPEN/CLOSE button while plugging back in.
If there would be a whirring sound/vibration but still no tray movement, then it would be an internal hardware issue; either the loading/unloading belt is loose, slipping (most likely) or completely broken or the motor that it is coupling has faulted (least likely). Another (likely) possibility would be a gearing system concern.
The screw can possibly be needing an allen wrench or a variety of it.