My disc tray will not open and sounds like it's running but locked.

Can't Open the Tray or Eject the Disc From the DVD Player

• Make sure the child lock feature is disabled.
• Try to open the disc tray.
• If the issue still occurs, power off your DVD player.
• Unplug the power cord for 30 seconds and then plug it back in.
• Power on your device.
• Try to open the disc tray.

https://www.sony.com/electronics/support/articles/00010261

That means that there is a mechanical error concerning the tray gears

The low humming sound is the motor that opens and closes the drawer. It is moving, but the movement is not being transferred to the door by a pulley, a belt or a gear, When you open the drawer completely, it should stop. When the drawer is closed completely it continues to run until the disc is in the proper position to play. As long as that motor is running the DVD will not work because the disc is not in the proper position,

Electronics Corporation sells inexpensive DVD players. The DVD players, however, often exhibit problems due to their manufacture and way that they work, which must be dealt with during the course of the player's life. Knowing what these problems are beforehand can aid in resolving difficulties when using the DVD player. In some cases, it can help eliminate the problem before it can become catastrophic



The disc door is not properly closed if the Disc player display shows an "Open" error message. Check that there are no gaps in the door and use the remote to open the disc door. If it will not open, unplug the Disc player and gently pull out the disc door and then push it in. Plug the Disc player back into the AC socket.

If the DVD has not been inserted properly into the disc tray, a "No Disc" error message will come up on the display. Eject the disc and lightly flick off dust using the edge of a lintless cloth. Inspect the disc for damage. Insert it carefully again into the disc tray and use the remote to close the disc door.


Because the Disk player is inexpensive, the power supply is not of the highest quality. Having a surge protector to plug into the Disc player will help to keep the power supply from being damaged over the course of its lifetime.

Have a nice day

Ensure the child lock feature is disabled. Attempt to open the disc tray. If the issue is not resolved, turn off the DVD player. Unplug the power cord from the electrical outlet for 30 seconds. Plug the power cord back into the electrical outlet. Attempt to open the disc tray. If the disc tray still does not open, simultaneously press the POWER + STOP + EJECT buttons. If the disc tray still does not open, simultaneously press the DISC1 + STOP + EJECT buttons or the RETURN + ENTER+ POWER buttons. If the issue is still unresolved, service may be required. The Sony eService Web site at http://eservice.sony.com/ can assist you in obtaining service from a Sony Service Center or locating a Sony Authorized Servicer.

hello Setting the disc ejection lock
You can lock the disc tray to prevent the disc form
being ejected.
When the main unit is turned off, hold down the STOP
key at the front panel for 5 seconds
If you attempt to open the disc tray by pressing
OPEN/CLOSE key, the disc tray does not open and
“LOCKED” appears in the display window.
To cancel the disc ejection lock, hold down the STOP
key at the front panel for 5 seconds again when the
main unit is turned off.
“UNLOCKED” is displayed in the display window.
Note:
Before the main unit is turned off, DVD/CD function
should be selected.

there is a small hole in the front of the tray that will accept a straightened paper-clip. gently insert the clip and the tray should release. if the cd/dvd disc is dislodged from being flat in the tray, it may not come out. you might need to open the cover and manipulate the disc to get it back flat in the tray. a good first test is to see if the disc plays. if it does, it is in the tray correctly and should be easily released with the paper clip. the try might work after you release it.
another possible first try would be to gently push inward on the tray after telling it to release. if there is extra tension on the tray it could cause the mechanism to not release. freeing the tension on the tray could be all that you need to get the 'unlock' to release. (kinda like trying to open a door when someone is pushing it very hard against the lock mechanism. it wont be able to move).
good luck
mark