Resetting Audio and Video Settings - webOS Video
[Narrator]If you are experiencing an issue with your Audio or Video, you can easily reset you're A/V to factory settings.
Press the Mute button on the remote control 3 times, then click AV Reset.
The "Resetting AV values" message will appear at the top of the screen.
If this does not solve the problem, please visit LG.com/us/support or contact us.