Check before you start.
These can be the reasons your remote control isn't working.
1. Low battery: replace the batteries in the remote control.
2. Obstacles in front of the TV: Remove all the obstacles in front of the TV that cover the receiver. The receiver is located at the bottom right corner or in the middle.
3. Intense light sources: An intense light source can obscure the infrared reader (e.g. brignt sunlight). Try moving the TV to another place.
Registering the remote control.
These can Un-register your remote control first.
Disconnect the 'Remote registeration' by pressing and holding the 'Back button' and the 'Home button' together for 5 seconds.
Then remove your fingers from the buttons and press the 'OK button'.
A notification will appear on top right: 'Remote registeration is disconnected'. Please press the [OK(wheel)] button to register.
When you press the 'OK' button, 'Registering New remote' notification will appear.
Follwed by this, you will get another notification 'Magic remote control has been successfully registered'.