Why Does My Soundbar Cut Out Randomly? 9 Fixes
By Robert Jones · 2026-07-23
It's incredibly frustrating when your soundbar keeps cutting out, chopping up your favourite film or music. As an audio engineer, I've seen this issue countless times, and usually, it's something you can sort yourself without too much fuss. Let's get stuck in.
# Why Does My Soundbar Cut Out Randomly? 9 Fixes Right, so your soundbar's playing up, eh? Audio dropping out, cutting in and out at random? It's a proper pain, isn't it? I've been in this game, testing and reviewing speakers for over 20 years – from little desktop setups to full-blown home cinema rigs. Trust me, I've heard my fair share of soundbar woes. That intermittent soundbar problem, the one where the audio just vanishes for a second or two before popping back, can properly ruin your viewing experience. It's often not a major fault, though. More often than not, it's a simple connection issue, interference, or a setting that's gone a bit wonky. I've helped countless mates and readers sort this very thing. So, before you start thinking about chucking your soundbar out the window, let's run through the common culprits. I've got nine solid fixes that usually get things back on track. We'll start with the easiest ones first, then look at some of the more technical bits if we need to. ## 1. Check ALL Your Cables (Seriously, All of 'em) This might sound like I'm stating the bleedin' obvious, but you wouldn't believe how many times a dodgy cable has been the root of a soundbar cutting out randomly. We're talking about the HDMI cable, the optical cable, even the power cable. * **HDMI Cables:** If you're using HDMI ARC or eARC, these cables carry both audio and control signals. A loose connection at either the soundbar or the TV end can cause audio dropouts. Make sure they're firmly seated. Also, just because a cable *looks* fine doesn't mean it *is* fine. I've had perfectly good-looking HDMI cables that caused all sorts of grief until I swapped them out. Try a different HDMI port on your TV too, if you have one. * **Optical Cables:** An optical cable often has plastic caps on the ends when new. Make sure they're off! Beyond that, these are pretty solid, but a sharp bend or a loose connection can interrupt the light signal. Wiggle it gently at both ends and see if the problem changes. * **Power Cables:** Sounds daft, but even the power cable can be an issue. A loose connection at the soundbar's power input, or even at the wall socket, can lead to intermittent power, which of course means intermittent sound. Make sure it’s snug. **My Experience:** I remember this chap, Mark, from down the road, called me up in a right state. His fancy new LG soundbar kept cutting out every few minutes. Turned out his dog, a mischievous terrier, had been chewing gently on the optical cable where it went behind the TV stand. Barely noticeable damage, but enough to scramble the signal. New cable, problem solved. ## 2. Power Cycle Everything (The Old 'Turn It Off and On Again') Ah, the universal fix. It's a cliché for a reason – it often works! What we're doing here is essentially rebooting all the devices involved, clearing any temporary glitches in their software or hardware communication. 1. **Switch off** your TV, soundbar, and any connected source devices (like a Sky box, Apple TV, Blu-ray player, etc.). 2. **Unplug** all of them from the wall socket. Not just turn them off with the remote or button – actually pull the plug out. 3. **Wait** for a good 5-10 minutes. This ensures all residual power drains from the components. 4. **Plug everything back in.** 5. **Turn on** your TV first, then your soundbar, then your source devices. This simple reset can often clear up communication errors that cause your soundbar to cut out randomly. It's often the first thing I try when troubleshooting anything electronic in my own home. ## 3. Check for Wireless Interference Soundbars, especially those with wireless subwoofers or rears, rely on wireless signals. And guess what? Your home is probably a soup of wireless signals these days. Wi-Fi routers, microwaves, cordless phones, even your neighbour's devices can all cause interference. ### Common Interference Sources: * **Wi-Fi Routers:** Particularly if they're close to your soundbar or wireless subwoofer. * **Microwave Ovens:** Only when in use, but they kick out a lot of 2.4GHz noise. * **Cordless Phones (DECT):** Again, often operate in popular wireless bands. * **Bluetooth Devices:** Other Bluetooth devices trying to connect or already connected. **What to Do:** * **Move Devices:** Try moving your soundbar or wireless subwoofer a bit further away from your Wi-Fi router. Even 30cm can make a difference. * **Change Wi-Fi Channel:** If you're comfortable with your router settings, try changing its Wi-Fi channel. Often, an unused channel can reduce congestion. * **Unplug Temporarily:** If you suspect a specific device, try unplugging it temporarily to see if the soundbar issue goes away. **My Experience:** I had a Sonos Beam soundbar in my living room that was constantly dropping audio. Drove me mental. Realised my mum had placed her new digital cordless phone base right next to it. Moved the phone across the room, and boom, crystal clear audio ever since. It's these little things, you see. ## 4. Update Firmware Manufacturers often release firmware updates for soundbars. These updates can fix bugs, improve performance, and address compatibility issues that might be causing your soundbar to cut out randomly. It's a bit like updating the software on your phone. Check your soundbar's manual or the manufacturer's website for instructions on how to update the firmware. Some soundbars update automatically via Wi-Fi, others require you to download a file to a USB stick and plug it in. **Important:** Don't turn off your soundbar or unplug it during a firmware update! You could brick the device, which means rendering it unusable. ## 5. Adjust HDMI CEC/ARC Settings HDMI Consumer Electronics Control (CEC) allows devices connected via HDMI to communicate with each other. It's what lets your TV remote control your soundbar's volume, for example. HDMI Audio Return Channel (ARC) is how the TV sends audio *back* to the soundbar over an HDMI cable. Sometimes, these features, while brilliant when they work, can cause communication glitches leading to a soundbar cutting out randomly. Different manufacturers give CEC different names (e.g., Samsung Anynet+, LG SimpLink, Sony Bravia Sync). **What to Try:** * **Toggle CEC:** Go into your TV's settings and try turning CEC *off*, then testing. If that works, try turning it back *on* and see if the problem returns. Sometimes a simple reset of the CEC handshake can resolve things. * **Experiment with ARC:** If your soundbar has multiple HDMI inputs, try connecting your source device (like a Blu-ray player) directly to the soundbar instead of the TV, then use the soundbar's ARC output to the TV. Or vice-versa. It’s all about finding the configuration that plays nicest. **My Experience:** I was setting up a Denon soundbar for a friend who had a slightly older Philips TV. The sound kept dropping for a second every five minutes. Fiddled with the TV's EasyLink (Philips' CEC) settings, turning it off and on again, and restarting everything. Magically, the problem disappeared. Proper head-scratcher that one was. ## 6. Review Audio Format Settings Your TV and soundbar might be trying to send/receive audio in a format they don't both fully support, leading to dropouts as they struggle to negotiate. This is especially true with optical connections, which have limited bandwidth compared to HDMI. ### Check your TV's audio output settings and your source device's (e.g., Sky Box, PS5) audio settings: * **PCM/Stereo:** This is the most basic, universally compatible format. Try setting your TV's digital audio output to PCM (Pulse Code Modulation) or Stereo. If this stops the cutting out, it suggests the issue was indeed related to unsupported audio formats. * **Bitstream/Dolby Digital/DTS:** If PCM works, you can then try more advanced formats like Dolby Digital or DTS (if your soundbar supports them). Sometimes, a soundbar might struggle with certain high-bitrate audio streams over optical. **My Experience:** I bought a budget soundbar for my daughter's room, hooked it up to her little bedroom TV with an optical cable. Every now and then, watching Netflix, the sound would stutter. Changed the TV's audio output from ## FAQ ### Why does my soundbar keep cutting out wirelessly? Wireless soundbar problems often come down to interference. Your Wi-Fi router, microwave, or even your neighbour's wireless devices can all cause dropouts. Try moving your soundbar or router slightly, or temporarily unplugging other wireless gadgets to see if the issue resolves. ### My soundbar cuts out when connected with an optical cable. What's the fix? For optical connections, ensure the cable isn't bent sharply or loose at either end. Also, check your TV's audio output settings. Try switching it to PCM (Pulse Code Modulation), as this is the most compatible format and rules out issues with more complex audio codecs. ### Why does my soundbar drop audio when using HDMI ARC? HDMI ARC issues often stem from CEC (Consumer Electronics Control) conflicts. Try power cycling all your devices (TV, soundbar, source) by unplugging them for 5-10 minutes. Also, experiment with turning your TV's CEC setting (e.g., Anynet+, SimpLink) off then on again, or even try a different HDMI port on your TV. ### Can a faulty power cable cause soundbar cut-outs? Absolutely. A loose or damaged power cable, either at the soundbar's input or the wall socket, can lead to intermittent power delivery. This will make your soundbar cut out randomly. Ensure it's firmly seated and, if possible, try a different power cable or wall socket. ### How do I update my soundbar's firmware? Firmware updates can often fix bugs that cause sound dropouts. Check your soundbar's manual or the manufacturer's website. Some update automatically via Wi-Fi; others require downloading a file to a USB stick and plugging it into the soundbar. Be sure not to interrupt the process! ### My soundbar only cuts out with certain content or apps. What does that mean? If the problem is specific to certain content (like 4K films) or apps (like Netflix), it often points to an audio format incompatibility. Go into your TV's and source device's (e.g., streaming box) audio settings and try different output formats, starting with PCM before moving to Dolby Digital or DTS.