The Smart Hub on your Samsung Smart TV allows you to customize your settings. If, for some reason, you’d like to reset these settings to their default state, this FAQ will help.
Reset Samsung Smart TV to Default Settings
First, exit the Smart Hub by pressing the Menu key on your remote control. Go to Smart Hub > Smart Hub Reset > Reset Smart Hub. Now, enter your PIN. (If you don’t remember having set a PIN, it may still be the default PIN, 0000.)
You will receive a message notifying you that the reset is complete.