[LG TV Sync] The video and audio are not synced

When using the TV with a set-top box or an external device or when listening to TV audio through an external audio device (home theater, soundbar, etc.), there may be a mismatch between the video and the audio.

➔ If you are using a set-top box and if the sound is not synced in particular channels, please contact the set-top service provider for assistance.

Try this

Set the [Picture/Sound Sync Control] function in the Sound menu.

It is supported only in some models, and the setting method differs depending on the product.

Smart TV (WebOS)

Select Home → Settings → View All Settings (Advanced Settings) → Sound → Picture/Sound Sync Control and set it to ‘On’.
Move to TV Speaker and change the settings. The audio output can be adjusted to a faster speed with the [-] button and to a slower speed with the [+] button.

Smart TV (NETCAST)

Select Smart → Settings → Sound → Picture/Sound Sync Control and set it to 'On'.
Move to TV Speaker and change the settings.
The audio output can be adjusted to a faster speed with the [-] button and to a slower speed with the [+] button.

General TV

Select Menu → Audio → Picture/Sound Sync Control and set it to 'On'.
Move to TV Speaker and change the settings.
The audio output can be adjusted to a faster speed with the [-] button and to a slower speed with the [+] button.

This guide was created for all models, so the images or content may be different from your product.