LG
- Press and hold the Settings button on the remote (first, the menu appears and after a few seconds it vanishes again and the channel id appears in the top left, that’s when you have to release the button)
- Type 1 1 0 5
- Press OK
(If your remote doesn’t have a Settings button, try Menu or HOME.)
Philips 26HFL5870D and similar
(Only works if TV is in “Standard” security mode.)
- Press the following keys in sequence: 3 1 9 7 5 3 MUTE