Why Does My Soundbar Keep Cutting Out? 7 Fixes to Try

Quick answer: Why does my soundbar keep cutting out? The usual causes are an HDMI ARC or eARC link that keeps dropping, a TV audio format such as Dolby Digital that the TV isn’t passing cleanly, or wireless interference on Bluetooth or a wireless subwoofer. Power-cycle everything, switch the TV’s audio output to PCM as a test, then work through cables and wireless placement.

Short dropouts are maddening because they come and go. One minute the dialogue is fine; the next, there’s a half-second hole in the middle of a sentence, and by the time you grab the remote everything sounds normal again.

The trick is figuring out which link in the chain is failing. Four suspects exist: the television, the cable, the bar and any wireless speakers. I’d test them in exactly that order, because each check is quicker than the one after it and the early ones rule out the most.

First, Rule Out the TV

Sonos gives a neat test in its support guide. It works for any brand. Disconnect the soundbar and play the same show through the built-in speakers.

• Built-in speakers drop out too: the set or the source box is at fault, not the bar. Update its software and contact the maker if gaps continue.
• Built-in speakers play cleanly: the trouble sits somewhere between screen and soundbar. Keep reading.

Don’t skip this step. It can save you an hour of fiddling with the wrong box, and honestly, it’s the check most people forget.

Match the Symptom to the Cause

When it cuts out	Most likely cause	Try first
Every few minutes on all inputs	HDMI ARC or CEC handshake	Power-cycle, check ARC and CEC
Only on Dolby Digital shows	TV audio format handling	Set TV output to PCM
Only on Bluetooth music	Range or 2.4 GHz interference	Move closer, use 5 GHz Wi-Fi
Only from the sub or rears	Wireless speaker link	Reposition, reset RF channel
When a show or ad starts	Automatic sound mode	Pick a fixed sound mode

Why Does My Soundbar Keep Cutting Out? 7 Common Causes

1. The HDMI ARC or eARC link resets. Sony’s checklist for missing sound starts with the ARC port, HDMI control and power-on order, which tells you how touchy this link is.
2. An audio format the set can’t pass cleanly. Sonos notes that if dropouts happen only with Dolby Digital, the television may not be sending the signal correctly.
3. A loose, kinked or tired cable. HDMI and optical leads both count.
4. Bluetooth range and interference. Sony’s help guide puts Bluetooth range at about 10 meters (33 feet) with nothing in the way, and says Wi-Fi gear and microwave ovens can shorten it.
5. Wireless subwoofer or rear speaker interference. Same radio crowding, different speakers.
6. An automatic sound mode switching. On some Sony bars, the Auto Sound mode can briefly interrupt audio when it changes modes to match the program.
7. Out-of-date TV or soundbar software.

How to Fix a Soundbar That Keeps Cutting Out

Fix 1: Power-Cycle the Whole Chain

Sonos recommends unplugging the television and any source, such as a cable box or game console, then waiting 10 seconds before reconnecting power. I’d include the soundbar in that cycle too. It costs nothing. It fixes plenty.

Fix 2: Switch the TV’s Audio Output to PCM

Open the sound or audio output menu on your television and change the digital output format to PCM or Stereo as a test. If the gaps stop, the set wasn’t handling the surround format well, and Sonos says to contact its manufacturer in that case.

You’ll lose surround while testing. That’s fine. Think of it as a diagnosis rather than a permanent setting, because once you know the format is the trigger you can chase a firmware fix instead of living with stereo forever.

Fix 3: Check the HDMI Setup on Both Ends

Sony’s help guide lists the checks for an HDMI connection, and they apply broadly:

• Plug the bar into the HDMI port labeled ARC or eARC.
• Turn on HDMI control (CEC) plus the ARC or eARC setting on the television.
• If your set doesn’t support eARC, turn eARC off on the soundbar.
• Power the screen on first, then the bar. Depending on the power-on order, Sony warns “the speaker system may be muted” and shows MUTING on its display.

Fix 4: Inspect or Swap the Cable

Look for bends and kinks, and make sure both plugs sit fully in their ports. For optical, Sonos suggests keeping the TV on, unplugging the end at the soundbar and checking for a red light at the loose tip.

No light? No signal. If you have a spare cable, swap it in before you blame anything pricier.

Fix 5: Clear the Air for Bluetooth and Wireless Speakers

When you stream over Bluetooth or use a wireless sub, radio clutter is my first suspect. Sony’s advice:

• Move the bar and the phone or speaker closer together.
• Keep microwaves and other Bluetooth gear away.
• Switch your Wi-Fi router to its 5 GHz band if it offers one, since Bluetooth shares the 2.4 GHz band.
• Keep metal objects, apart from the television itself, away from the bar.

For the HT-A9 system, Sony goes further and suggests keeping the control box and speakers at least 1.5 m (5 ft) from a wireless LAN router, changing the router’s antenna angle, and even moving nearby gadgets from Wi-Fi to a wired connection so they stop crowding the airwaves.

Fix 6: Turn Off Automatic Sound Modes

Gaps right as a show or ad begins? Suspect an auto mode. On Sony models with Auto Sound, Sony suggests picking a fixed sound mode instead.

Fix 7: Update the Software

Sonos lists a software update for the television as a standard step. Check for soundbar firmware too, through the bar’s menu or its app.

Sony Soundbar Keeps Cutting Out?

Sony owners have two extra settings to try, both from Sony’s help guides for models with wireless rear speakers or a subwoofer:

1. Go to Setup > Advanced Settings > Speaker Settings > Wireless Speaker Settings > RF Channel, turn it Off, then back On.
2. In the same menu, set Wireless Playback Quality to Connection. This favors a stable link over maximum quality.

If those don’t help, a reset is the next step. See how to reset a Sony soundbar. LG owners can follow how to reset an LG soundbar.

When to Call for Service

My take: if the built-in speakers play cleanly, you’ve swapped the cable, tried PCM and reset the bar, and the gaps still keep coming, stop troubleshooting and contact the soundbar maker. Sonos points owners to its support team, and other brands run similar channels.

One more thing. If a Sony bar flashes PRTCT and shuts off, Sony says to unplug it and check that nothing blocks the ventilation holes. That’s a protection shutdown. Different problem entirely.

Browse more soundbar guides for setup and placement help.

Frequently Asked Questions

Why Does My Soundbar Keep Cutting Out with HDMI ARC?

Sony lists HDMI control (CEC) and the ARC setting among its checks for missing sound. Power-cycle both boxes, confirm those settings are on, and switch the screen on before the soundbar.

Why Does My Soundbar Cut Out with Dolby Digital but Not PCM?

According to Sonos, that pattern suggests the television isn’t passing the Dolby signal correctly. Use PCM for now and contact its manufacturer.

Why Does My Bluetooth Soundbar Keep Cutting Out?

Distance and interference. Sony rates Bluetooth at about 10 meters with a clear path, and Wi-Fi routers, microwaves and walls cut that down.

Will a New HDMI Cable Fix Soundbar Dropouts?

Sometimes. A kinked or loose lead can cause gaps, so swapping it is a cheap test. If the built-in speakers also drop out, a new cable won’t help.

Last updated: November 10, 2026. Sources: Sonos: TV audio stops or skips, Sony HT-A3000 Help Guide: no TV sound, Sony HT-A3000 Help Guide: Bluetooth communication and Sony HT-A9 Help Guide: sound skips.