If your TV is not responding to your remote, this could be due to either an issue with the remote, or the TV's I/R receiver, the following test will help determine which.
If it is an issue with the remote, this can be resolved simply with a new remote, rather than repairs to the TV.
To begin with, please ensure that you have new batteries in your remote.
1) If you have access to a digital camera that has a screen, or a phone that has a camera, turn it on and direct the remote at the camera's lens. On an iPhone, please use the front-facing camera, the rear camera will not show the light.
2) While looking through the camera, try pressing any of the buttons that are having issues and look for a flash of light. The flash is not visible to the naked eye, and can only be seen through the camera's display.
If the remote is working correctly, there will be a flash of light visible on the end of the remote.
If you see a flash of light and the remote is still not working correctly, or if you see flashes while you are not pressing any buttons, check to make sure none of the remote's buttons are stuck.
If no lights are appearing, and you have tested replacing the batteries, your remote may be faulty.
If the remote is appearing to work correctly and the TV is still not responding, there may be an issue with your TV's I/R receiver.
Replacement remotes for your TV may be available on our website if your warranty period has expired, alternatively, please contact our Support Team to inquire about the availability of a replacement remote or ex-warranty repair.
If you are within warranty period, please contact our Support Team with the results from the above test.