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.