You’ll find them in newer devices, but having one inside your headphone is of little benefit if your TV is outfitted with an older radio (and vice versa). And while aptX LL is great, it’s not universally supported. Both of those scenarios, however, depend on the transmitting device and the receiving device having those capabilities. And newer iterations of Bluetooth–version 5.0 and above–have a feature that automatically negotiates latency. For a third-party home theater system, check the instruction manual or contact the manufacturer for information on how to adjust the A/V sync setting.Converting a digital audio signal to an analog waveform you can hear takes just a couple of milliseconds, but transmitting audio from one place to another takes time: 40 to 50 milliseconds using a low-latency codec such as aptX LL.For information about the availability of A/V sync or Audio Delay setting, refer to the operating instructions supplied with the product.Audio delay adjustments usually range from 0ms to approximately 250ms.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).For other TV: How do I power reset my LCD / LED or Projection TV?.For Google TV and Android TV: How do I power reset my Android TV or Google TV?.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 BD.If your TV has a Game Mode setting, do one of the following:.Try playing a different video source to determine if the issue occurs with other connected devices.Make sure all cables are securely connected to the TV and the source device (set-top box, DVD player, BD player, home theater system, or game console).Note: If the issue occurs on one channel only, contact the broadcast network provider. If watching a TV program, 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: For how to update the TV, refer to the article How to perform a software update on your TV. Make sure that the TV has the latest system software (firmware) installed.Review this video for troubleshooting tips or skip to the steps.īecause each of the steps below represents a possible solution to this issue, check if the issue is resolved after completing each step. Note: If there is an input lag issue when using a game console with a Google TV or Android TV, refer to the article Reduce input lag when using the Game setting. In such cases, there are no issues with the TV speakers. If the TV is connected to a soundbar or home theater system (with an HDMI cable or optical cable), the sound may be delayed due to audio processing delays in the soundbar or home theater system.There may even be a setting on the TV itself causing this issue. ![]() When connected to a home theater system with a digital optical cable, then there may be an audio delay that requires a manual adjustment on the home theater system.If a DVD or Blu-ray Disc® player is connected, a poor connection or the disc itself could be the cause.If watching a TV program, it could be the broadcast itself or a bad connection between your cable/satellite set-top box (if applicable).There are a number of circumstances that can cause the audio and video to be out of sync. ![]()
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