Unlocking your Samsung TV requires access to the Samsung TV service menu, which will allow you to reset or remove any previous lock in the settings. In order to unlock your Samsung TV you will need your remote control. All you have to do is simply follow the instructions provided below and you can use the service menu to guide you from there. Also note that upon entering the Service Menu, all User Menu settings will revert to factory defaults!
Steps To Unlock A Samsung TV
1. Turn the power off.
2. On the remote, press Mute followed by 1, 8, 2, Power in sequence.
3. You should now see the service menu. To exit the Service Menu always select RESET.
If you do not currently have your Samsung TV’s remote control, then you will probably have to contract Samsung Electronics division in your country. You can try using their email support form located here.