Check your manual to see if A/V Sync or Audio Delay setting is available on your home theater system.Audio delay adjustments usually range from 0 milliseconds to approximately 250 milliseconds.If a home theater system is connected to your TV with an optical cable, change the A/V Sync or Audio Delay setting on your home theater system (if available).Set the Game Mode to On when playing a video game.Set the Game Mode to Off when watching TV or playing a DVD or Blu-ray Disc.On your TV, set the Game Mode setting accordingly.Play a different video source to determine if the issue occurs with other devices.Make sure that all cables are securely connected to your TV and your source device (set-top box, Blu-ray Disc player, home theater system, etc.).Contact your broadcast network provider for further assistance. If it occurs on one channel only, the issue is with the broadcast.If you're watching a TV program, change the channel to see if the issue occurs on other channels.If your TV is connected to the internet, you can download the software update through the TV menu.Not all TVs have software that can be updated.Make sure your TV has the latest software update installed.Power reset for Android TV™ or Google TV™ models.Depending on the cause, this issue is often resolved by performing a power reset on your TV.If model-specific information is needed to perform any action, check your product Troubleshooting stepsĬheck if the audio and video sync issue is resolved after completing each step. In this case, the issue is not with the TV speakers. Note: If the TV is connected to a soundbar or home theater system with an HDMI or optical cable, the sound may be delayed due to the audio processing delays in the soundbar or home theater system.

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