How to Fix Audio and Video Out of Sync on an LG TV

Last updated: October 2026

🕒 2 min read

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How to fix audio and video out of sync on an LG TV? LG’s page asks whether every channel is affected. This article follows only that page, “LG TV – Audio and Video Out of Sync”. We haven’t tested any TV.

Start With Which Channels Are Out of Sync

If only certain channels are out of sync, LG says a problem with their broadcast signal is highly likely, and to contact your broadcast service provider first.

How to Fix Audio and Video Out of Sync on an LG TV: All Channels

LG says to try using both the TV speaker and an additional external speaker. If the sound is out of sync, adjust the sync in Match Screen and Sound. LG also says to try delaying the TV’s audio output to sync it with the external speaker.

LG TVs From 2021 (webOS 6.0) or Later

Go to Settings → All Settings → Sound → Advanced Settings → Match Screen and Sound. LG notes this applies only to the TV speaker or devices that support Sound Share and are connected to the HDMI (eARC/ARC) port.

Select Bypass. LG says sound is then output without delay.
If the problem persists, turn Bypass off and adjust TV Speaker Delay carefully. The closer to 60, the slower the voice output gets.

LG TVs From 2020 (webOS 5.0) or Earlier

Go to Settings → All Settings → Sound → Additional Settings → AV Sync Adjustment.

Set Bypass to ON and check the sync.
If still out of sync, set Bypass to OFF and adjust the video and speech volume from 0 to 15.

What LG’s Page Doesn’t Say

LG’s page shows a date of 07/17/2026 and says it covers all models, so content may differ from your TV. It gives no recommended TV Speaker Delay value.