Why is my Sony X90K sound not synced?

Common causes include software issues, connectivity problems, and settings misconfigurations. Follow our guide to fix your Sony X90K.

How do I fix Sony X90K sound not synced?

Start by restarting your device, checking connections, and updating firmware. Our step-by-step guide provides detailed instructions.

When should I call support for my Sony X90K?

If troubleshooting doesn't resolve the issue, or you encounter persistent errors, contact a certified Sony technician.

Sony X90K Sound Not Synced

When you're watching your favorite shows or gaming on your Sony X90K, audio that doesn't match the video can ruin the experience. The Sony X90K sound not synced issue is a common problem that typically stems from incorrect audio settings, external device connections, or processing delays in soundbars and receivers. The good news is that this is usually fixable with a few adjustments to your TV's configuration. This guide walks you through proven troubleshooting steps to get your audio and video perfectly aligned again.

Quick Fixes for Audio Delay on Your Sony X90K

Before diving into advanced settings, try these simple solutions that resolve most Sony X90K sound not synced problems:

Check Your HDMI Cable Connections: Unplug all HDMI cables from your TV and external devices, then reconnect them firmly. Use high-speed HDMI cables rated for 4K content, as older or damaged cables can cause signal processing delays that throw audio out of sync. If possible, test with a different certified HDMI cable.

Power Cycle Your TV and Sound System: Turn off your Sony X90K and unplug it from the wall for 60 seconds. Do the same for any soundbar, receiver, or external speakers. This clears temporary glitches in the audio processing pipeline that commonly cause sync issues.

Adjust the A/V Sync Setting: Press the Home button on your remote, go to Settings → Display & Sound → Audio output → A/V sync. If the sound is behind the picture, increase the value. If the sound is ahead, decrease it. Adjust in 10ms increments until lip movements match the dialogue. Test with dialogue-heavy content.

Change the Digital Audio Out Format: Navigate to Settings → Display & Sound → Audio output → Digital audio out. Try switching between "Auto 1," "Auto 2," and "PCM." PCM often reduces processing delay since it bypasses format conversion, which can eliminate the Sony X90K sound not synced issue when using external audio systems.

Disable Audio Enhancement Features: Go to Settings → Display & Sound → Sound adjustments → Advanced settings and turn off "Dolby Dynamic Range," "DTS Neural:X," and any virtual surround processing. These features add processing time that creates audio delay. Also disable "eARC" temporarily to test if standard ARC provides better sync.

Update Your Sony X90K Firmware: Press Home, then go to Settings → System → About → System software update. Install any available updates. Sony regularly releases firmware patches that fix audio synchronization bugs, especially for eARC and HDMI 2.1 compatibility with newer soundbars and gaming consoles.

Advanced Troubleshooting for Persistent Sync Problems

If basic adjustments haven't resolved the Sony X90K sound not synced problem, consider these targeted solutions based on your setup:

For soundbar users: Many soundbars have their own A/V sync or "lip sync" adjustment in their companion app or physical remote. Check your soundbar manual—brands like Sony, Samsung, and Sonos include this feature. Set your TV's A/V sync to 0ms and adjust from the soundbar side instead, as this often yields better results.

For gaming console users: PlayStation 5 and Xbox Series X can introduce variable audio delay. On your console, disable "Dolby Atmos" and use uncompressed stereo or 5.1 PCM. In your Sony X90K settings, set the HDMI input to "Enhanced format (VRR)" and ensure "ALLM" is enabled to minimize processing overhead.

For built-in apps vs. external devices: If sync issues only occur with streaming apps like Netflix or Disney+, try updating those specific apps or reinstalling them. If the problem is universal across all sources, the issue likely lies in your TV's audio processing hardware or settings.

Warning: Performing a factory reset will erase all your personalized settings, installed apps, and login information. Only use this as a last resort after documenting your picture and audio settings. To factory reset: Settings → System → About → Reset → Factory data reset.

Frequently Asked Questions

Why does my Sony X90K audio lag only when using a soundbar?

This typically happens because both your TV and soundbar are processing the audio signal, creating a "double processing" delay. Fix this by using the A/V sync adjustment on only one device—preferably your soundbar. Also ensure you're using the TV's eARC HDMI port (usually HDMI 3) with a certified Ultra High Speed HDMI cable.

Does the Sony X90K have automatic lip sync correction?

The X90K supports HDMI 2.1's Auto Low Latency Mode (ALLM) but does not have fully automatic audio sync detection. You must manually calibrate the A/V sync setting. Some external devices and soundbars with HDMI 2.1 QMS (Quick Media Switching) can help, but manual adjustment is still the most reliable solution for Sony X90K sound not synced issues.

Can Game Mode cause audio sync problems on the Sony X90K?

Yes. Game Mode minimizes input lag by disabling video processing, but this can sometimes desynchronize audio that was timed for standard processing modes. If you experience sync issues in Game Mode, try switching to "Graphics" picture mode temporarily, or adjust the A/V sync specifically while in Game Mode settings.

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