If the TV audio is out of sync, first, check if the issue occurs on only one specific channel.
If the audio is out of sync on all channels, go to [Match Screen and Sound] and turn on [Bypass].
If the issue continues, turn off [Bypass] and adjust the speaker delay setting.
Why Are the Picture and Sound Out of Sync?
- If the issue occurs on only one channel
- If the issue occurs on all channels
How to Sync the Picture and Sound
Step 1. Turn On Bypass
How to check your TV's webOS version
On your TV remote, press the [Settings] (gear icon) or [Mute] button three times in a row.
- 2021 and later TVs (webOS 6.0 and later): Press Settings on your remote control, select All Settings, Sound, Advanced Settings, Match Screen and Sound, and turn on Bypass.
- 2020 and earlier TVs (webOS 5.0 and earlier): Press Settings on your remote control, select All Settings, Sound, Additional Settings, AV Sync Adjustment, and turn on Bypass.
Step 2. Adjust the Speaker Delay
- If the picture and sound are still out of sync, turn off Bypass.
- Select TV Speaker Delay and adjust the value until the sound matches the lip movements on the screen.
Step 3. Still need help?
If the issue persists after following the steps above, you can get further support through LG Chatbot on our website or by requesting a technician visit.
FAQ
- Q. Why Are the Picture and Sound Out of Sync on Only One Channel?
-
A. The broadcast signal for that channel may be temporarily out of sync.
Contact your TV service provider or set-top box provider to have the signal checked.
This guide is based on standard models. The settings menu may vary by model.
