- It could be a fault of the TV set Or the remote control
- It is easy to test the remote control than the TV set
Note* Make sure to check that the batteries are working and that they are properly installed.
The easy way to test the remote control‘s infra-red LED is working or not, You would need to have a digital camera / camera phone to do the test.
Switch on the camera and face the remote control (LED side) to the camera lens and press the button on the remote control you will get the infra-red LED lighting up on the camera screen.
Test all the buttons and if they all are working then it would mean that the sensor on the TV set is not working or you could possibly have the wrong remote.