There should be contact info on their site to help you fix that problem
If your TV is over 45in you should call Geek Squad. They will send a tech to your house to determine the problem. And if you need to get a new TV. They will advise on what location would service your TV needs for a local Best Buy.
I need a laptop fixed too same. I went there one day n they're just closed
Thanks! Your answer is awaiting moderation.