Im having the same issues with the remote not working that I’ve read from previous posts. Tried everything - replacing batteries - pairing with the back and play button with no luck. Keeps telling me not available. TV is only 6 months old. This shouldn’t be happening this early. What next?
I would recommend factory resetting the TV you can do that by navigating to Settings and then General. Select Reset. Enter your PIN (0000 is the default) and then select Reset. To complete the reset, select OK. Your TV will restart automatically. If these steps don't match your TV, navigate to Settings > Support > Self Diagnosis, and Reset will be located in that menu.
Could you send me a private message with the full model and serial number?
This has happend on both of my TVs... my kids get the remotes, push the buttons too hard and they "stick". The flashing red light is a constant signal from the remote. Check all the buttons and see if the helps.
Sorry, I forgot to include, a simple test to see if it is the remote. Hold your hand over or block the IR sensor on the front of the remote, if the blinking red light stops, probably a stuck button. That's how I figured mine out.
I have the same problem. 6 month old tv and remote red light flashes. The on/off button works but nothing else. I tried to pair the remote but now I get a message on the tv that says "not available". I don't know how to factory reset the tv since the remote does not work.