If your TV doesn't find channels and you are not sure what course of action to take, contact Samsung's customer service, which you can reach by dialling the following number: +1 800-726-7864.
Alternatively, you can reach them online, on their website (click here to visit it).
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.