Why Sonos Arc with Sony Bravia No Sound Happens
If your Sonos Arc with Sony Bravia no sound issue appeared suddenly, the cause is usually a settings mismatch rather than a hardware failure.
The most common triggers involve HDMI ARC/eARC handshakes, TV audio format settings, or a muted output path.
The Sonos Arc relies on the Sony Bravia TV to send audio over HDMI ARC or eARC, so even a small configuration change can stop sound entirely.
Understanding where the signal breaks makes troubleshooting much faster.
First Checks Before Changing Settings
Before diving into menus, confirm the basics.
These quick checks solve many Sonos and Bravia audio problems without deeper troubleshooting.
- Make sure the Sonos Arc is powered on and visible in the Sonos app.
- Verify the HDMI cable is firmly connected to the TV’s HDMI ARC or eARC port and to the Arc.
- Check that the TV is not muted and the volume is raised.
- Test a different source, such as the TV home screen, a streaming app, or a connected device.
- Restart both the Sony Bravia TV and the Sonos Arc.
For a clean restart, unplug the TV and the Arc from power for about 60 seconds, then reconnect the TV first and the Arc second.
This can reset the HDMI audio handshake.
Confirm the Correct HDMI Port and Cable
On Sony Bravia televisions, the Arc must connect to the designated HDMI port labeled ARC or eARC, often HDMI 3 or HDMI 4 depending on the model.
If the Arc is connected to a standard HDMI input, the TV may send no audio at all.
Use a high-speed HDMI cable that supports ARC/eARC.
While older cables may work for basic ARC, an HDMI cable with Ethernet or a certified Ultra High Speed cable is a safer choice for stable audio transport, especially with Dolby Atmos or eARC.
What to look for on the TV
- Port label: ARC or eARC
- Audio output selection: External speakers or Audio system
- HDMI control: Enabled
Check Sony Bravia Audio Output Settings
Many no-sound cases come from the TV sending audio to the wrong output or using an unsupported format.
Open the Sony Bravia sound settings and verify the output is set for the Sonos Arc.
Depending on the Bravia model, look for settings such as Speakers, Audio System, HDMI ARC/eARC, or External Audio System.
The exact wording varies by Android TV, Google TV, and older Bravia software versions.
Recommended Sony Bravia settings
- Speakers: Audio System
- TV Position: Table-top or Wall Mount if available, as directed by calibration options
- Digital Audio Out: Auto or PCM for troubleshooting
- eARC mode: Auto
- Pass-through mode: Auto or Off if troubleshooting a mismatch
If sound works on PCM but not on Auto, the issue is likely an audio format negotiation problem between the TV and the Arc.
Adjust the Audio Format for Compatibility
Audio format settings are one of the biggest reasons a Sonos Arc with Sony Bravia no sound issue appears, especially after a firmware update.
Sony TVs may default to a format that your current source or connection path does not handle well.
Start with the simplest option: set the TV’s digital audio output to PCM and test sound.
PCM is widely compatible, though it may not deliver Dolby Atmos or advanced surround formats.
If PCM restores audio, the TV and Arc are communicating, and the problem is likely tied to Dolby Digital, Dolby Digital Plus, or eARC pass-through settings.
Common format combinations
- PCM: Best for testing and basic compatibility
- Dolby Digital: Common and usually stable over ARC
- Dolby Digital Plus: Often used by streaming apps and may require eARC for best results
- Auto Passthrough: Can work well, but may break if the source or TV firmware changes
After confirming sound on PCM, gradually move back to Auto or Dolby settings to find the most reliable configuration for your setup.
Inspect eARC and HDMI Control Features
HDMI control and eARC must usually be enabled for the Sonos Arc to function correctly with a Sony Bravia TV.
If either feature is disabled, the TV may not hand off audio properly.
Look for settings related to Bravia Sync, HDMI Control, CEC, and eARC.
On Sony TVs, Bravia Sync is the brand name for HDMI-CEC, which allows the TV and soundbar to communicate over HDMI.
Enable these features
- Bravia Sync: On
- HDMI Control: On
- eARC mode: Auto
- TV speakers: Off or Audio System selected
After changing these options, power cycle both devices again.
HDMI-CEC changes often require a fresh handshake before audio returns.
Test the Sonos Arc in the Sonos App
The Sonos app can reveal whether the Arc is connected and receiving a TV signal.
Open the app and check the room name, system status, and any notifications about audio loss or setup issues.
If the Arc appears offline or unresponsive, the problem may be with network connectivity, power, or software.
If the Arc is online but silent, the issue is more likely on the TV or HDMI side.
Useful app checks
- Confirm the Sonos Arc appears in the correct room
- Check for software updates
- Review any audio input status messages
- Run TV setup again if the app suggests it
Eliminate Source-Specific Problems
Sometimes the Sonos Arc works with one source but not another.
That usually means the TV itself is fine, but the connected device or app is outputting an incompatible format.
Test several sources: the Bravia home interface, a built-in streaming app such as Netflix or Disney+, and any external device like a PlayStation 5, Apple TV, Roku, or cable box.
If one source is silent while others work, inspect that device’s audio output settings.
Examples of source issues
- Apple TV set to an unsupported audio mode
- PlayStation audio output not aligned with TV passthrough
- Cable box output locked to a format the TV does not pass through cleanly
- Streaming app using Dolby Digital Plus while the TV is set to PCM or basic ARC limitations
Update Firmware on Both Devices
Firmware updates often fix HDMI compatibility issues, but they can also temporarily introduce them.
Keeping both the Sony Bravia TV and Sonos Arc updated reduces the chance of persistent audio bugs.
Check for TV software updates in the Sony settings menu and update the Sonos system through the Sonos app.
After updating, restart both devices and retest audio over HDMI ARC or eARC.
When to Reset Settings or Re-add the Arc
If all settings look correct and the Sonos Arc still produces no sound, a reset of the HDMI audio path may help.
Start with the least disruptive steps first.
- Disable and re-enable Bravia Sync
- Toggle eARC off and back on
- Swap the HDMI cable with a known good certified cable
- Remove the Arc from the Sonos app and set it up again if recommended by Sonos support
Factory resets should be a last resort because they remove useful configuration data.
In most cases, a simpler HDMI re-handshake or audio setting correction is enough.
Signs the Problem Is Hardware-Related
Hardware failure is less common, but it can happen.
If the Sonos Arc does not appear in the app, never shows a TV input, and no HDMI cable or port change helps, there may be a problem with the soundbar, the TV port, or the cable itself.
To isolate the issue, try the Arc on another TV with ARC/eARC support or test the Bravia port with another known-good sound system.
If the Arc works elsewhere, the Sony TV port or settings are the likely cause.
If it fails on multiple TVs, the soundbar may need service.
Most Effective Fixes in Order
- Confirm the Arc is connected to the Bravia ARC/eARC port
- Restart both devices by unplugging power
- Set Sony audio output to Audio System
- Change Digital Audio Out to PCM for testing
- Enable Bravia Sync, HDMI Control, and eARC Auto
- Try a certified HDMI cable
- Update firmware on the TV and Sonos system
- Test multiple content sources
For most users, one of the first four steps resolves the Sonos Arc with Sony Bravia no sound problem quickly and reliably.