How to Fix Hisense TV Audio Out of Sync: The Ultimate Guide

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Author: Kajal Singh

Are you frustrated with your Hisense TV’s audio lagging behind the video? You’re not alone. Audio synchronization issues can turn your favorite movies into a lip-reading challenge and make even the most thrilling sports events unwatchable. But don’t worry – we’ve got you covered with this comprehensive guide to fixing Hisense TV audio out of sync problems.

In this ultimate guide, we’ll explore the causes of audio sync issues in Hisense TVs and provide you with over 15 expert solutions to get your sound back in perfect harmony with your picture. From quick fixes to advanced troubleshooting techniques, we’ve got everything you need to enjoy your content without any annoying delays.

Table of Contents

Understanding Audio Sync Problems in Hisense TVs

Before we dive into the solutions, it’s essential to understand why audio sync issues occur in the first place. Audio delay in TVs can happen for various reasons, including:

  1. Processing lag: Modern TVs process video signals more quickly than audio signals, leading to a mismatch.
  2. External device issues: Soundbars, cable boxes, or gaming consoles can introduce their own processing delays.
  3. Content source: Streaming services, broadcast TV, and different types of content can have varying levels of synchronization.
  4. Network problems: For smart TVs, poor internet connections can cause buffering and sync issues.
  5. Outdated firmware: TV software that isn’t up to date may have bugs affecting audio synchronization.

Technical Aspects of Audio-Video Synchronization

To truly grasp the complexity of audio sync, it’s important to understand some technical aspects:

  • Lip-sync error: The threshold for noticeable lip-sync errors is about 45 milliseconds for audio leading video and 125 milliseconds for audio lagging behind video.
  • Frame rate: Different content frame rates (24fps, 30fps, 60fps) can affect how audio sync is perceived.
  • Audio codecs: Various audio formats (Dolby Digital, DTS, PCM) may have different processing times, impacting sync.

How Hisense TV Models Differ in Audio Processing

Hisense offers a range of TV models, each with its own audio processing capabilities:

  • ULED Series: These high-end models often have more advanced audio processing, which can sometimes introduce slight delays.
  • Roku TV Models: These smart TVs may have different audio sync issues depending on the Roku OS version and app being used.
  • Laser TV: These projection-based systems may require specific calibration for perfect audio sync.

Now that we understand the potential causes and technical aspects, let’s explore the solutions to get your Hisense TV’s audio back in sync.

Quick Fixes for Hisense TV Audio Sync Issues

Let’s start with some simple solutions that can often resolve audio sync problems without much hassle.

Restart Your Hisense TV

Sometimes, the easiest solution is the most effective. Rebooting your TV can clear temporary glitches and reset the audio-video processing:

  1. Turn off your Hisense TV using the remote or power button.
  2. Unplug the TV from the power outlet.
  3. Wait for 60 seconds (this allows capacitors to fully discharge).
  4. Plug the TV back in and turn it on.

Check Cable Connections

Loose or faulty cables can cause audio sync issues. Inspect all connections between your TV, external devices, and audio systems:

  • Ensure HDMI cables are securely plugged in at both ends.
  • Try using different HDMI ports on your TV.
  • If using optical or RCA cables for audio, check these connections as well.
  • Consider using high-quality, certified HDMI cables for better performance.

Update Your TV’s Firmware

Outdated firmware can lead to various issues, including audio sync problems. To update your Hisense TV’s firmware:

  1. Press the Home button on your remote.
  2. Navigate to Settings > Support > System Update.
  3. Select “Check Firmware Update” and follow the on-screen instructions.

If you’re having trouble updating your firmware, you may want to consult the Hisense TV Manual for model-specific instructions.

Clear Cache and Temporary Files

Clearing the cache can resolve sync issues caused by corrupted temporary data:

  1. Go to Settings > Storage & Reset.
  2. Select “Clear Cache” and confirm.
  3. Restart your TV after clearing the cache.

Disable Unnecessary Picture Processing Features

Some picture enhancement features can introduce lag:

  1. Navigate to Settings > Picture.
  2. Turn off features like motion smoothing, noise reduction, or dynamic contrast.
  3. Enable “Game Mode” if available, even for non-gaming content, as it reduces processing lag.

Adjusting Hisense TV Audio Sync Settings

If the quick fixes didn’t solve the problem, it’s time to dive into your TV’s settings to adjust the audio synchronization manually.

Access the Audio Settings Menu

To find the audio sync settings on your Hisense TV:

  1. Press the Menu button on your remote.
  2. Navigate to Sound or Audio settings.
  3. Look for an option called “Audio Delay,” “AV Sync,” or “Lip Sync.”

Use the Built-in Audio Sync Adjustment Feature

Once you’ve found the audio sync settings, you can adjust the delay:

  1. Play a video with clear speech or rhythmic content.
  2. Adjust the audio delay slider while watching the video.
  3. Increase the delay if the audio is ahead of the video, or decrease it if the audio is behind.
  4. Make small adjustments (usually in 10ms increments) until the audio and video are in sync.

For more detailed information on optimizing your TV’s sound, check out our guide on Hisense TV Sound Settings.

Fine-tune Audio Delay for Optimal Synchronization

For the best results, use test patterns or specific scenes to fine-tune the audio sync:

  1. Look for scenes with clear lip movements or rhythmic actions (like clapping).
  2. Adjust the audio delay in small increments (usually measured in milliseconds).
  3. Test different types of content to ensure the sync works across various sources.

Model-Specific Audio Sync Settings

Different Hisense TV models may have unique audio sync features:

  • ULED Series: Look for “Ultra Smooth Motion” settings that can affect audio sync.
  • Laser TV: Use the built-in audio calibration tool for precise sync adjustment.
  • Roku TV: Access advanced audio settings through the Roku menu for sync adjustment.

Using Test Patterns and Audio Sync Apps

For precise adjustment, consider using:

  • Online audio sync test videos (available on YouTube)
  • Specialized audio sync apps available on smart TV platforms
  • Professional calibration discs for home theater enthusiasts

Troubleshooting Hisense TV Audio Sync with External Devices

External devices can often be the culprit behind audio sync issues. Let’s explore how to address these problems.

Soundbars and Home Theater Systems

If you’re using a soundbar or home theater system with your Hisense TV, try these steps:

  1. Check the audio output settings on your TV to ensure they match your external audio device.
  2. Adjust the audio delay settings on the soundbar or receiver itself, if available.
  3. Try different connection methods (e.g., HDMI ARC, optical, or analog) to see if one works better.

For more information on connecting external audio devices, visit our guide on How to Connect Soundbar to Hisense TV.

Cable and Satellite Boxes

Cable or satellite boxes can introduce their own processing delays. To address this:

  1. Check for firmware updates on your cable or satellite box.
  2. Adjust the audio sync settings on the box itself, if available.
  3. Try connecting the box directly to your TV rather than through a receiver or soundbar.

Gaming Consoles

For gaming consoles experiencing audio sync issues:

  1. Check the audio output settings on your console to ensure they match your TV or audio system.
  2. Update your console’s system software to the latest version.
  3. Enable game mode on your TV to reduce input lag, which can affect audio sync.
  4. Adjust in-game audio settings if the game provides such options.

Streaming Devices (Roku, Fire TV, Apple TV)

If you’re using a separate streaming device:

  1. Update the streaming device’s firmware to the latest version.
  2. Check the audio output settings on the device to ensure compatibility with your TV.
  3. Try using the TV’s built-in smart features instead to see if the issue persists.

Bluetooth Headphones and Speakers

Bluetooth audio can sometimes introduce lag. To minimize this:

  1. Ensure your Bluetooth device is compatible with low-latency codecs like aptX or AAC.
  2. Keep the Bluetooth device close to the TV to maintain a strong connection.
  3. Update the Bluetooth device’s firmware if possible.

AV Receivers and HDMI Switches

Complex setups with AV receivers or HDMI switches can complicate audio sync:

  1. Check if your AV receiver has its own audio sync adjustment feature.
  2. Ensure all devices in the chain support the same HDMI version and audio formats.
  3. Try simplifying your setup temporarily to isolate the source of the sync issue.

Advanced Solutions for Persistent Audio Sync Problems

If you’re still experiencing audio sync issues after trying the previous solutions, it’s time to explore some more advanced troubleshooting steps.

Reset Your Hisense TV to Factory Settings

A factory reset can often resolve persistent issues:

  1. Press the Menu button on your remote.
  2. Navigate to Settings > System > Reset & Admin.
  3. Select “Factory Reset” and follow the on-screen instructions.

Note: This will erase all your personalized settings, so use it as a last resort. For a detailed guide on resetting your TV, check our article on How to Reset Hisense TV.

Update Connected Devices’ Firmware

Ensure all connected devices are running the latest firmware:

  1. Check the manufacturer’s website for each device (e.g., soundbar, gaming console, streaming stick).
  2. Follow the instructions to update the firmware on each device.
  3. Restart all devices after updating.

Use Third-party Audio Sync Apps and Tools

Some advanced users might benefit from third-party solutions:

  1. Research audio sync apps compatible with your devices.
  2. Consider hardware solutions like audio delay boxes for severe cases.
  3. Be cautious when using third-party apps and always download from reputable sources.

Adjust Audio Format and Bitstream Settings

Experiment with different audio output formats:

  1. Navigate to your TV’s audio settings.
  2. Try switching between PCM and Bitstream output.
  3. If using an AV receiver, ensure it supports the audio format you’re using.

Explore HDMI-CEC and ARC/eARC Configurations

HDMI-CEC and ARC/eARC can sometimes cause sync issues:

  1. Try disabling HDMI-CEC to see if it resolves the problem.
  2. If using ARC or eARC, ensure both your TV and audio device support it.
  3. Update to the latest HDMI cables that support these features.

Optimizing Audio Settings for Different Content Types

Different types of content may require slightly different audio sync settings for the best experience.

Adjust Settings for Various Content

  • Movies and TV shows: Use scenes with clear dialogue for syncing.
  • Live sports and news broadcasts: Focus on lip movements of anchors or commentators.
  • Gaming: Enable game mode and adjust for both cutscenes and gameplay. For competitive games, prioritize low latency over audio quality if necessary.
  • Streaming services: Test sync across different apps (Netflix, YouTube, Hulu, Disney+) as they may have varying processing times.
  • Music and concert videos: Pay attention to instrument sounds matching visual cues for precise syncing.

Virtual Surround Sound and Object-Based Audio Formats

When using advanced audio formats:

  1. Ensure your TV and audio system support the format (e.g., Dolby Atmos, DTS:X).
  2. Adjust sync settings specifically for these formats, as they may require different timing.
  3. Consider disabling virtual surround features if sync issues persist.

Preventing Future Audio Sync Issues

Taking proactive steps can help prevent audio sync problems from recurring.

Implement Preventive Measures

  • Perform regular maintenance: Keep your TV and connected devices updated with the latest firmware.
  • Optimize your setup: Use high-quality cables and minimize the number of connections in your audio chain.
  • Be mindful of your viewing environment: Factors like room acoustics can affect perceived sync.

Understanding HDMI 2.1 Features for Audio Sync

If you have newer devices supporting HDMI 2.1:

  1. Use HDMI 2.1 cables to take advantage of features like Auto Low Latency Mode (ALLM) and Variable Refresh Rate (VRR).
  2. Enable eARC if your devices support it for better audio sync capabilities.
  3. Understand that not all HDMI 2.1 features may be available on older Hisense models.

For smart TVs and streaming content, network issues can cause sync problems.

Optimize Wi-Fi Connection for Streaming

  1. Position your router closer to the TV or use Wi-Fi extenders for better signal.
  2. Switch to the 5GHz band if available for faster, more stable connections.
  3. Limit the number of devices using your network while streaming.

Using Wired Connections for Better Stability

  1. Connect your Hisense TV directly to your router using an Ethernet cable.
  2. Use powerline adapters if direct Ethernet connection isn’t possible.
  3. Ensure your network cables are Cat5e or higher for optimal performance.

Addressing Bandwidth and Quality of Service (QoS) Settings

  1. Check your internet speed using online speed tests.
  2. Configure QoS settings on your router to prioritize TV streaming traffic.
  3. Consider upgrading your internet plan if bandwidth is consistently an issue.

Model-Specific Audio Sync Solutions

Different Hisense TV models may require specific approaches to audio sync issues.

Hisense Roku TV Audio Sync Fixes

  1. Update the Roku OS to the latest version.
  2. Use the audio sync adjustment feature in the Roku settings menu.
  3. Factory reset the Roku TV if persistent issues occur.

ULED Series Audio Adjustment Techniques

  1. Explore advanced picture settings that may affect processing time.
  2. Use the “Game Mode” setting even for non-gaming content to reduce lag.
  3. Adjust the “Ultra Smooth Motion” settings to find the right balance.

Laser TV Audio Calibration

  1. Use the built-in audio calibration tools specific to Laser TV models.
  2. Consider the room acoustics and screen material when calibrating.
  3. Consult the Laser TV manual for model-specific calibration instructions.

When to Seek Professional Help

If you’ve tried all the above solutions and still can’t resolve the audio sync issue, it may be time to consider professional assistance.

  • Persistent issues across all inputs and content may indicate a hardware problem.
  • Unusual noises or distortions accompanying the sync issues could signal hardware failure.

Warranty Coverage and Repair Options

  • Check your TV’s warranty status to see if repairs are covered.
  • Consider authorized repair services if your TV is out of warranty.

Contacting Hisense Customer Support

  • Visit the official Hisense support website for troubleshooting guides and contact information.
  • Prepare detailed information about your TV model and the issues you’re experiencing before contacting support.

For a comprehensive guide on troubleshooting various Hisense TV issues, including audio problems, visit our Hisense TV Troubleshooting page.

Expert Tips and Tricks

For those looking to achieve perfect audio sync, here are some advanced techniques:

Using Audio Extraction Devices

  1. Consider using an HDMI audio extractor to separate audio and video signals.
  2. Adjust the delay on the extractor for precise synchronization.
  3. This method can be particularly useful for complex setups with multiple devices.

Calibrating Audio Sync with Professional Equipment

  1. Use a calibration microphone and software for precise measurements.
  2. Consider hiring a professional calibrator for high-end home theater setups.
  3. Learn to use specialized tools like REW (Room EQ Wizard) for advanced audio analysis.

Creating Custom Audio Profiles

  1. Create different audio sync profiles for various content types (movies, sports, gaming).
  2. Use your TV’s memory settings to quickly switch between profiles.
  3. Regularly update these profiles as you fine-tune your system.

Frequently Asked Questions

Why does my Hisense TV sound lag behind the picture?

This can be due to processing delays in the TV or connected devices, or issues with the content source or network connection.

Can a bad HDMI cable cause audio sync issues?

Yes, faulty or low-quality HDMI cables can cause various audio-video problems, including sync issues.

How do I sync my Hisense TV with Bluetooth speakers?

Access your TV’s Bluetooth settings, pair the speakers, and adjust the audio delay in the TV’s sound settings if necessary.

Why does audio sync vary between apps on my Hisense smart TV?

Different apps may process audio and video differently, leading to varying sync issues. Adjust settings for each app individually if possible.

Is there a universal fix for all audio sync problems?

Unfortunately, there’s no one-size-fits-all solution. The best approach is to systematically troubleshoot using the methods outlined in this guide.

How do I fix audio sync issues when using a soundbar?

Check connections, update firmware, and adjust audio delay settings on both the TV and soundbar. Consider using HDMI ARC for better synchronization.

Can software updates cause audio sync problems?

While rare, software updates can sometimes introduce sync issues. If this occurs, try resetting your TV to factory settings or wait for a patch update.

How do I troubleshoot audio sync issues with gaming consoles?

Enable game mode on your TV, ensure your console’s output settings match your TV’s capabilities, and adjust in-game audio settings if available.


Dealing with audio sync issues on your Hisense TV can be frustrating, but with the expert fixes we’ve provided, you’re well-equipped to tackle the problem. Remember to approach troubleshooting methodically, starting with the simplest solutions and working your way up to more advanced techniques.

By following this comprehensive guide, you should be able to resolve most audio sync problems and enjoy your favorite content with perfectly synchronized sound and video. If you continue to experience issues, don’t hesitate to reach out to Hisense customer support or consult a professional technician.

Keep in mind that maintaining your TV and connected devices with regular updates and proper setup can help prevent future audio sync issues. With patience and the right approach, you’ll be back to enjoying your Hisense TV’s crisp picture and perfectly timed audio in no time.

As technology continues to evolve, we can expect even more advanced solutions for audio synchronization in future TV models. Stay informed about the latest developments and updates for your Hisense TV to ensure the best possible viewing experience.

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