There are a number of circumstances that can cause the audio and video to be out of sync:
- If you're watching a TV programme, it could be because of the broadcast itself or a bad connection between your 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 you have connected a Home Theater System with a digital optical cable, then there may be an audio delay that requires a manual adjustment to the sound on the Home Theater System. There may even be a setting on the TV itself causing this issue.
NOTE: If the TV is connected to a Sound Bar or Home Theater System (with an HDMI cable or optical cable), the sound may be delayed. This is due to audio processing delays from the externally connected device(s). In such cases, there are no issues with the TV speakers.
As each step below represents a possible solution, please check if the issue is resolved after completing each step.
- Make sure that the TV has the latest system software (firmware) installed.
- Not all TVs have software that can be updated. To see if your TV can be updated, check the TV specifications.
- If the TV is connected to a high-speed Internet connection, a software update can be downloaded from the menu of the TV.
- If you're watching a TV programme, try changing the channel to see if the problem occurs on other channels. If it only occurs on one channel, then the issue is with the broadcast.
NOTE: If the issue only occurs on one channel, please contact the broadcast network provider.
- Make sure all cables are securely connected to the TV and the source device (set-top box, DVD player, Blu-ray Disc player, Home Theater System or game console).
- Try playing a different video source to determine if the issue occurs with other connected devices.
- If your TV has a Game Mode setting, please try one of the following:
- Set the Game Mode to Off when watching TV or playing a DVD or Blu-ray Disc player.
- Set the Game Mode to On when playing a video game.
- If the issue is happening when using the TV speakers, perform a power reset on the TV.
- If there is a Home Theater System and a digital optical cable is used in the connection, manually change the Audio/Video Sync or Audio Delay setting on the Home Theater System (if available).
- Audio delay adjustments usually range from 0ms to approximately 250ms.
- For information about the availability of A/V sync or Audio Delay setting, refer to the operating instructions supplied with the product.
- For a third-party Home Theater Systems, check the instruction manual or contact the manufacturer for information on how to adjust the A/V sync setting.
If the issue is still unresolved, service may be required.