Tray in DVD player will not respond to front panel or remote for open/close menu says it is locked

1. Power and switch on the Durabrand DVD player.
2. Open the DVD disc tray tray or lid.
3. Press Stop.
4. Press 3 – 5 – 9 – 7 (3597 in sequence). Can be done on remote control.
5. Hidden DVD Region menu appears. Select region 0 or 9 using up or down button on remote control.
6. Press OK.
7. Close the disc tray and press Standby on the DVD player front

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.

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.

Dear friend,
Press and hold stop+play button on the front panel of the dvd player more than 15 sec the player will be resetting

The Disc Tray is Locked
If the message “Tray Locked” appears on the screen, the retail lock feature has
been accidentally engaged. To unlock the disc tray you must press and hold a
combination of keys simultaneously:
On the front panel of the DVD Player, press and hold the STOP, ON•OFF and
OPEN•CLOSE buttons for at least 3 seconds.

I forget the password Your player is equipped with a “back-door” unlock sequence. Press and hold
the STOP button on the front of the DVD Player and the STOP button on the
remote control at the same time. (Hold both buttons down at the same time
for at least 3 seconds).

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

Alright, just follow these steps and let me know if you have any problems or questions

1. Power and switch on the Durabrand DVD player.
2. Open the DVD disc tray tray or lid.
3. Press Stop.
4. Press 3 - 5 - 9 - 7 (3597 in sequence). Can be done on remote control.
5. Hidden DVD Region menu appears. Select region 0 or 9 using up or down button on remote control
6. Press OK.
7. Close the disc tray and press Standby on the DVD player front

The Disc Tray Will Not Open And/Or There Is A Disc Stuck In The Player. Some DVD Players manufactured prior to 2003 have a Dealer Lock or Child Lock function. This will prevent the panel buttons from operating.

This function is activated by pressing the STOP button on the front panel
and the POWER button on the remote control simultaneously for four seconds in the power on state. Repeating this sequence releases the dealer lock. When the dealer lock in activated, DEALER LOCK ON or DEALER LOCK OFF scrolls on the display.

If this does not resolve your problem there may be an error with in the player. To resolve this try the following these steps:

1. Unplug the DVD player from the electrical outlet and leave it unplugged for thirty seconds.
2. Plug the DVD player back in to the electrical outlet, but do not turn the DVD player on.
3. With the DVD player off, press the [Open/Close] button on the front of the DVD player. The home theater should power on when you press the [Open/Close] button and eject the tray.

The second option worked for me...

Press and Hold EJECT Button, While UNLOCK Is Displayed :-)

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.