Hello, thanks for using
Fixya.com
The buttons on the side is what we call the
control board module, there are other terms for this board.
You will need to change out this board, doing this you hold harmless
Fixya.com and its experts from any liability resulting in personal injury or
malfunctioned tv.
You can find the part effected from one of these websites.
www.shopjimmy.com
www.partstore.com
You would search with your model number that is on your TV. Some cases you would need a service manual to help guide you to witch screws to take out etc etc.
The issue your having is this little board with the buttons on it. you can replace this board or simply take it into a repair shop where you would be charged a few hundred bucks.
Thanks for using
Fixya.com I hope you found this very helpful
Btw, I’m available to help over the phone in case u need at
https://www.6ya.com/expert/edwy_1a56970cf1ea4620