Reset the TV to the original factory settings:
Retrieve the menu by pressing the “Home” button on the remote.
Select “Setup”, then “TV Settings”, then “Factory Settings”. Press “OK”.
The unit will prompt you to enter a PIN code, so unless you changed it yourself simply enter the default code of “8888”.
Select “Reset” and press the “OK” button.
The TV will begin the factory reset process and all of your settings will be returned to their default status.