How to Fix Sony Soundbar Sound Cutting Out
If your Sony soundbar keeps losing audio for a few seconds or cuts out entirely, the cause is usually a connection, setting, or power issue rather than a failed speaker.
This guide walks through the most reliable fixes so you can isolate the problem quickly and restore stable sound.
Common reasons a Sony soundbar cuts out
Audio dropouts can happen with wired and wireless setups, and they often point to one of a few recurring problems.
Understanding the likely cause helps you skip random trial and error and focus on the right fix.
- Loose HDMI ARC or optical cable connections
- HDMI-CEC/eARC handshake issues between the TV and soundbar
- Bluetooth interference or weak wireless signal
- Outdated firmware on the soundbar or TV
- Power saving settings that lower output or trigger standby behavior
- Audio format incompatibility such as Dolby Atmos, DTS, or PCM mismatches
- Faulty cables, adapters, or ports
Start with the physical connection
Before changing settings, check the hardware path from the TV, streamer, console, or receiver to the soundbar.
A partially seated cable is one of the most common reasons people search for how to fix Sony soundbar sound cutting out.
Inspect HDMI ARC or eARC connections
If you use HDMI ARC or eARC, unplug the cable at both ends and reconnect it firmly.
Use a certified High Speed or Ultra High Speed HDMI cable, especially if you pass Dolby Atmos or 4K HDR audio.
- Connect the soundbar to the TV’s ARC/eARC port only.
- Replace old or damaged HDMI cables.
- Try a different HDMI port on the TV if ARC is not required for your setup.
Check optical audio if you are not using HDMI
With optical connections, make sure the TOSLINK cable is fully inserted and the protective caps have been removed.
Optical cables can also fail if bent too sharply or damaged at the ends.
Restart the soundbar and TV correctly
A proper power cycle clears temporary handshake errors between Sony soundbars and modern smart TVs.
This is especially useful after firmware updates, app changes, or HDMI device swaps.
- Turn off the TV and soundbar.
- Unplug both devices from power.
- Wait at least 60 seconds.
- Reconnect the TV first, then the soundbar.
- Power on the TV and test audio again.
If you use a streaming device such as Apple TV, Roku, Fire TV, or Chromecast, restart that device too.
Adjust TV audio settings
Many audio dropouts come from mismatched TV output settings rather than the soundbar itself.
Sony soundbars are sensitive to the TV’s digital audio configuration, especially with eARC systems.
Set the audio output format
In your TV menu, try switching the digital audio output from Auto to PCM, then test playback.
If PCM is stable, the issue may be related to Dolby or bitstream passthrough.
Useful settings to test include:
- PCM for the simplest, most compatible output
- Dolby Digital for surround-capable but more stable compressed audio
- Auto or Pass Through if your setup supports it reliably
Disable problematic HDMI features temporarily
Features like HDMI-CEC, eARC, and sync control can be helpful, but they can also create repeated renegotiation between devices.
If the sound cuts out when switching apps or inputs, temporarily disable these features to test stability.
- Turn off BRAVIA Sync or CEC on the TV
- Toggle eARC off and on
- Disable audio passthrough if available
Update Sony soundbar and TV firmware
Firmware updates often fix compatibility problems with streaming devices, HDMI standards, and wireless audio behavior.
Sony regularly releases updates for soundbars through the Sony | Sound Connect app or the manufacturer’s support tools, depending on the model.
Check both devices:
- Sony soundbar firmware
- TV firmware
- Streaming device firmware
After updating, restart everything and retest the same content that was cutting out before.
Pay close attention to whether the dropout happens on live TV, apps, or only one external device.
Troubleshoot Bluetooth dropouts
If your Sony soundbar is connected over Bluetooth, the audio may cut out because of distance, interference, or an unstable source device.
Bluetooth is convenient, but it is more vulnerable than HDMI or optical.
Move closer and reduce interference
Keep the source device within reasonable range and remove obstacles between the source and the soundbar.
Wi‑Fi routers, microwaves, cordless phones, and crowded apartment networks can interfere with Bluetooth signals.
Reconnect the Bluetooth pairing
Delete the soundbar from your phone, tablet, or computer, then pair it again from scratch.
Old pairings can become unstable after software updates.
- Forget the soundbar on the source device
- Power cycle both devices
- Pair again manually
- Test with a different phone or laptop to isolate the source
Check soundbar power and sleep settings
Some Sony soundbars reduce output or enter a low-power state depending on the setting and input signal.
This can feel like the audio is cutting out when the real issue is auto standby or energy-saving behavior.
Review settings such as:
- Auto Standby
- Power Saving Mode
- Voice enhancement or dynamic range features
- Input auto switching
Turn off power-saving options temporarily and test again.
If the soundbar becomes stable, re-enable settings one at a time until you find the trigger.
Test a different source to isolate the fault
Determining whether the problem follows the soundbar, the TV, or the source device is one of the fastest ways to diagnose intermittent dropouts.
A simple source swap can reveal whether you are dealing with a hardware issue or an app-specific audio problem.
- Play audio from the TV’s built-in apps
- Test a different HDMI device
- Try a music app on a phone via Bluetooth
- Use a different cable if available
If the sound only cuts out with one app or one device, the Sony soundbar may be fine and the issue lies with that source’s audio output.
Reset the soundbar if the problem persists
If basic troubleshooting does not help, a reset may clear corrupted configuration data.
This is often worth doing after you have already checked cables, settings, and firmware.
Before resetting, note your preferences such as HDMI input, sound mode, and wireless pairing.
After the reset, reconnect the soundbar to the TV and test stable playback before restoring advanced settings.
When to suspect a hardware fault
If audio still cuts out after trying multiple sources, new cables, fresh firmware, and a full reset, the issue may be hardware-related.
Internal amplifier faults, damaged HDMI ports, or a failing wireless module can all produce intermittent sound loss.
Signs of a possible hardware problem include:
- Cutouts happen on every input and source
- The soundbar restarts unexpectedly
- One HDMI port works while another fails
- Bluetooth disconnects even when the source is nearby
- Audio returns only after physically moving the cable
At that point, contact Sony support or the retailer if the unit is still under warranty.
Having your model number, serial number, and a clear description of when the dropouts occur will make support faster and more useful.
Best quick fixes to try first
If you want the fastest path to stable audio, start with the fixes most likely to solve the problem:
- Reseat or replace the HDMI ARC/eARC cable.
- Restart the TV, soundbar, and source device.
- Switch TV audio output to PCM for testing.
- Update all firmware.
- Disable eARC or CEC temporarily.
- Re-pair Bluetooth devices if wireless audio cuts out.
These steps solve many Sony soundbar dropouts without requiring advanced tools or a service appointment.