Contents
Before you start
Possible factors:
Several factors can cause the audio and video to go out of sync.
- If you're watching a TV program, the issue may be with the broadcast itself or a bad connection between your TV and the cable/satellite set-top box (if applicable).
- If a DVD or Blu-ray Disc® player is connected, a poor connection or the disc itself could be the cause.
- If the TV is connected to a home theater system using a digital optical cable, you may need to manually adjust the audio delay on the home theater system. A TV setting might also be responsible for the issue.
- If the TV is connected to a soundbar or home theater system using an HDMI or optical cable, the sound may be delayed due to audio processing delays within the soundbar or home theater system. In such cases, there are no issues with the TV speakers.
Related articles:
Common troubleshooting
Each step below offers a potential solution. We recommend checking if the issue is resolved after completing each step.
- Make sure your TV has the latest system software (firmware) installed.
Note: Refer to this article for the update procedure: How to perform a software update. - If you're watching a TV program, try changing the channel.
Note: If the issue only occurs on one channel, the problem is likely with the broadcast. Contact the broadcast network provider. - Make sure all cables are securely connected to the TV and source devices (e.g., set-top box, DVD player, home theater system, game console).
- Try a different video source to check whether the audio and video sync issue occurs with other connected devices.
- If your TV has a Game Mode setting, adjust it as follows:
- Set the Game Mode to Off when watching TV or playing a DVD or Blu-ray Disc.
- Set the Game Mode to On when playing video games.
- Perform a power reset on the TV. For details, refer to the following:
- If you're using an HDMI cable or digital optical cable to connect the TV to a home theater system, manually adjust the home theater system's A/V sync or Audio Delay setting, if available.
Notes:
- Audio delay adjustments usually range from 0 ms to approximately 250 ms.
- For more information on the A/V sync or Audio Delay setting, refer to the operating instructions supplied with the product.
- If you are using a third-party home theater system, check the manual or contact the manufacturer for information on how to adjust the A/V sync setting.
Additional troubleshooting for Google TV and Android TV models
Try the following TV settings:
Note: Depending on the model, some settings may not be available. For details, refer to your product manual.
- Press the
(Quick Settings) button on the remote control, then select 
Settings. - Select Display & Sound → Audio output → Digital output delay.
If the issue continues, try connecting external devices directly to the soundbar instead of the TV.
For details, refer to the following article: How do I connect a Sound Bar to my television?
Try changing the Digital audio out, A/V sync, and Pass through mode settings.
- Open the Settings screen.
- If the remote control has a Quick Settings ( or
) button, press the Quick Settings button and select Settings. - If the remote control does not have a Quick Settings ( or ) button, press the HOME button and select Settings.
- Depending on your TV menu, follow one of these paths:
- Select Display and sound → Audio output → Audio system settings → Digital audio output → PCM.
- Select Display and sound → Audio output → Audio system settings → Digital audio out → PCM.
- Select Display & Sound → Audio output → Digital audio out → PCM or LPCM.
- Select Bravia Settings → Digital audio out → PCM.
- Select Sound → Digital audio out → PCM.
Notes:
- Not all Google TVs or Android TVs have a Pass through mode setting. Check your product manual for model-specific information. Manuals are posted on your model support page.
- While the Pass through mode setting is enabled, there may be no audio from the system, Google Assistant, TalkBack, or Screen Reader.
To adjust the Pass through mode setting:
- Open the Settings screen.
- If the remote control has a Quick Settings ( or ) button, press the Quick Settings button and select Settings.
- If the remote control does not have a Quick Settings ( or ) button, press the HOME button and select Settings.
- Depending on your TV menu, follow one of these paths:
- Select Display and sound → Audio output → Audio system settings → Digital Audio output → Prioritize pass through.
- Select Display and sound → Audio output → Digital Audio out → Prioritize pass through.
- Select Display and sound → Audio output → Audio system settings → Digital Audio out → Auto.
- Select Display & Sound → Audio output → Pass through mode → Auto.
If TalkBack or TalkBack (screen reader) is set to On, set it to Off:
- Open the Settings screen.
- If the remote control has a Quick Settings ( or ) button, press the Quick Settings button and select Settings.
- If the remote control does not have a Quick Settings ( or ) button, press the HOME button and select Settings.
- Depending on your TV menu, follow one of these paths:
- Select Device Preference or System → Accessibility → TalkBack → Off.
- Select Accessibility → TalkBack (screen reader） → Off.
Note: This issue applies to some TV models released in 2019 or later.
This issue can occur if the audio format of the HDMI device is set to bitstream output (Dolby Digital, Dolby Digital Plus, DTS, etc.).
To fix this, follow these steps:
- Change the HDMI device's audio format to PCM. Refer to the HDMI device's manual for information on how to change the audio format.
- For models that have Post-processing or Post process settings: To improve the audio sync, change the Post-processing or Post process setting to Standard.
- Press the (Quick Settings) button on the remote control.
- Select Picture ＆ Sound → Sound (TV Speakers) → Post-processing or Post process setting → Standard.
- For models that have Sound mode settings: To improve the audio sync, change the Sound mode of the TV to a setting other than Dolby Audio, such as Standard.
- Press the (Quick Settings) or ACTION MENU button on the remote control.
- Select Sound mode.