Chosen Solution
My tv went mute last night but I click the mute button on and off and nothing happens. It remains mute. I went to settings/soundout / it’s on optical, is that correct?
Open the Settings menu either by using the button on your remote or if your remote doesn’t have a Settings button, press the Home/Smart button, then click the Settings icon.Navigate to the Audio/Sound menu.Choose Sound Out, then select TV Speakers. Try this! This might help you! Regards, Lewis
or just try to unplug it then wait 10 seconds then plug it back