Hello, sorry to hear that you having issues with your remote or TV.
First, comes the most common questions but its worth a shot, Did you replace the batteries?
Second, You could try and clean the infrared eye on the tv with a moist cloth to make sure the window on it is not dirty or blocked from the line of sight of the remote.
Also check you batteries once more, also take the batteries out of the remote and push on the buttons as one ore more could be stuck causing the remote to malfunction.
Worse cases are bad remote or bad control board in the TV witch cause it not to respond to the remote. First check the remote very well. You could also replace the remote at www.remotes.com or purchase a universal remote as well.
Only if the new remotes do not work you would call it a bad control board in the tv witch could cost around $90 to replace if there are part available.
Most cases would be the remotes batteries or connectors itself or batteries incorrectly installed.
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Rulds2008 Btw, I’m available to help over the phone in case u need at
https://www.6ya.com/expert/edwy_1a56970cf1ea4620