Disk player display says tray lock on

The child lock is on. Press the power off until just the time shows in the display. Then press and hold the stop button until the display shows "unlocked". You should be able to open the tray now.

Please try the following procedure: start the player without any disk on it, open the disk tray, leave this way and at your remote control press 9 9 9 9 0 , you should see region 0 displayed, then close the disk tray, your player should be now region free.

Samsung Home Theater Systems have a Dealer Lock or Tray Lock Function that prevents the disc tray from being opened.
There are four procedures for turning off the Dealer Lock function. Try one, then the other, to see which works on your system.
Unlocking Procedure 1 To turn off the Dealer Lock function, follow these steps:

1. Turn on your Home Theater System.
2. Press the Stop button on the front panel and the Power button on the remote control simultaneously for four seconds.

Note: Repeating the two steps above turns the dealer lock on again.
Unlocking Procedure 2 To turn off the Dealer Lock function, follow these steps

1. Turn on your Home Theater System.
2. Press and hold the Function button on the front panel for 3 seconds. The display shows the word Unlock.

Note: Repeating the two steps above turns the dealer lock on again.
Unlocking Procedure 3 To turn off the Dealer Lock function, follow these steps

1. Turn on your Home Theater System.
2. Press and hold the Open/Close button on the DVD player on the front panel for more than 4 seconds.

Note: Repeating the two steps above turns Dealer Lock on again.
Unlocking Procedure 4 To turn off the Dealer Lock function, follow these steps

1. Using the HTS remote press the Menu button + 712, and the HTS will display CAN OPEN.

The Dealer Lock feature is mainly used by retailers to ensure that the display discs are not removed. However, parents of young children may find this feature very useful as well.

If you are unable to get the tray of the dvd player open either the player will have a hole in front for you to stick a (I use a straightened out paper clip) into and press in towards the dvd player. It will manually open the drive so you can retrieve your dvd or there will be enough of a lip on the tray door you can grab it and pull it open manually. Then I would try unplugging the player and waiting a few minutes and plugging it back in and you might get lucky and it may never happen again. Good luck . Hope it works.

Press Setup then the numbers 2 0 0 5 then setup and it should unlock
or
Display 2 0 0 5 Display

uplug then replug then press eject

Push and hold down the Open/Close button until "UN-LOC" appears on the FL display (or "Disc Tray Unlocked" appears on the TV screen).

You have to press both the "on" button and the "preset" button to lock-unlock the tray

i have a panasonic SA-HT720 and it displayed locked anytime i wanted to eject discs so i found out that dad27's solution was the best and holding down the stop and power buttons also locks the system as well as unlocking it. God richly bless u dad27 u really helped me out

To unlock, manually press and HOLD the open/close button & the stop button simultaneously, and HOLD them both down until the lock picture disappears.   The DVD will eject when you press the open/close button. 

 

To lock the DVD inside the machine, repeat the same step, and it will lock it inside.