First check the remote controller is damaged or not either by battery leaking chemical problem. Second please try to reset the TV to the factory default in the setting menu. Below is the video link on how to reset https://youtu.be/Yu4BkWyC8Bk
First check the remote controller is damaged or not either by battery leaking chemical problem. Second please try to reset the TV to the factory default in the setting menu. Below is the video link on how to reset https://youtu.be/Yu4BkWyC8Bk