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

Troubleshooting

If the video and audio are not syncing on particular channels

➔ If the video and audio do not sync only on a particular channel, it is highly likely that there is a problem with the broadcast signal of that channel.
Please contact your broadcast service provider first for assistance.

If the video and audio are not syncing on all channels

➔ 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].
Try delaying the TV's audio output to sync it with the external speaker.

Try this

➔ Setting in [2021 WebOS6.0] or later

Press the setting button on the TV remote and select [All Settings] → [Sound] → [Advanced Settings] → [Match Screen and Sound].

※ This only applies to the TV speaker or devices that support the [Sound Share] feature and are connected to the HDMI (eARC/ARC) port of the TV.


1. Turn on the TV and press the [Settings] button on your TV remote.
Select [All Settings] in the [Settings] menu.

Image that enters all settings by pressing the setting button on the remote control

2. Select [Sound] → [Advanced Settings]→ [Match Screen and Sound].

Image of selecting additional settings in the sound menu
Image to select match screen and sound

3. Select [Bypass] in [Match Screen and Sound].
The sound from the broadcast signal or external device will be output without delay.

Image of selecting bypass setting

4. If the problem persists, turn off Bypass and select [TV Speaker Delay] to adjust the value carefully.
The closer the value is to 60, the slower the voice output gets.

Image of adjusting speaker delay

➔ Setting in [2020 WebOS5.0] or before

Press the setting button on the TV remote and select [All Settings] → [Sound] → [Additional Settings] → [AV Sync Adjustment].

1. Turn on the TV and press the [Settings] button on your TV remote. Select [All Settings] in the [Settings] menu.

Image that enters all settings by pressing the setting button on the remote control

2. Select [Sound] →[Additional Settings]→[AV Sync Adjustment].

Image of selecting more settings in the sound menu
Image to select AV Sync Adjustment

3. Select [Bypass] and set it to [ON], and then check if the audio and video are synced.

Image of selecting bypass

4. If they are still out of sync after [Bypass] is enabled, select [Bypass] and set it to [OFF], and then adjust the video and speech volume by selecting from 0 to 15

Images that directly adjust the screen and sound sync

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

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