How to access the service menu on LG Smart TV

  1. Turn on your Smart TV.
  2. Press the setup key on the remote control for about 7 seconds or until some information appears in the upper left corner.
  3. Next, press the 1,1,0,5 keys and press OK. The hidden menu will open on the left side of the screen.
Key combination to enter the hidden menu of an LG Smart TV

How to limit the volume of the TV

  1. In the hidden menu, go to Public Display Setting > Volume.
  2. In the Maximum Volume section, drag the cursor to the desired maximum volume.
Limiting the volume of an LG Smart TV

How to do a Factory Reset from the hidden menu

  1. In the hidden menu, click on Public Display Setting.
  2. Scroll to the bottom of the screen, click Factory Reset and follow the instructions.
Factory Reset on an LG Smart TV