If your TV is not responding to your remote, this could be due to either an issue with the remote, or an issue with the TV's I/R receiver.
The test below isolates whether this is an issue with the remote, or the issue with the TV. If it is an issue with the remote, this can be resolved simply with a new remote, rather than repairs to the TV.
To confirm this, please ensure that you have new batteries inserted in your remote.
1) If you have access to a digital camera that has a screen, or a phone that has a camera feature, turn it on and then direct the remote at the camera lens.
Note: On your iPhone, please use the front-facing camera, as the rear camera will not show the light.
2) While looking through the camera, try pressing any of the buttons you are having issues with and check if a flash of light appears.
The flash will not be the green light from the LED on the top of the remote that lights up when you press buttons, but will be a flash of light that appears at the end of the remote.
It is not visible to the naked eye and can only be seen through the phone/camera display.
If the remote button is working correctly, there will be a flash of light visible through your phone's screen.
If it is not working, there will be no flash of light.
If you see a flash of light but it's not responding or it's sending the same command, check to make sure none of the remote buttons are stuck.
Replacement remotes for your model may be available on our website. Alternatively, please contact our Support Team with the TV's model, the invoice from your original purchase, and the results from the above test.