The Vizio Sound Bar Keeps Cutting Out Solved
By Robert Jones · 2021-01-23
My Vizio soundbar keeps cutting out! – I hear this all the time. It's frustrating, but after twenty years in audio, I can tell you most fixes are simple. Let's get your sound back on track.
I get calls and emails all the time, folks frustrated to bits. "My Vizio soundbar keeps cutting out!" It’s a common wail, and honestly, it’s one of those things that can drive you absolutely barmy. One minute you're deep into a film, the next, silence. Or worse, it’s coming and going like a dodgy radio signal from across the channel. Trust me, I've seen this with just about every brand over the last two decades in the workshop, and Vizio's no exception. Let's get your sound back properly. **Quick Verdict:** Most Vizio soundbar cut-out issues are fixable at home, usually down to interference, dodgy cables, or a simple restart. ### Why Your Vizio Soundbar Might Be Doing the Hokey Cokey with the Sound Before we start pulling plugs and rummaging through settings, it’s worth having a think about *why* this happens. In my experience, it’s very rarely a sign that the soundbar itself is completely kaput. More often than not, it’s something rather straightforward, something that just needs a bit of a tweak or a replacement. Twenty-odd years of fettling with speakers and amps, and I’ve seen some truly bizarre solutions – and some blindingly obvious ones too. Let's unpick the usual suspects, shall we?  *The Vizio Sound Bar Keeps Cutting Out Solved — tested in the SpeakersMag workshop.* ## The Usual Suspects: Common Causes for Vizio Soundbar Drop-Outs Right, grab a cuppa, take a seat, and let’s go through this checklist. Think of me as that mate who comes over, pokes around your hi-fi for a bit, maybe grumbles a bit, and then suddenly, hey presto, it’s working again. Most of these solutions won't cost you a penny, just a bit of your time and patience. And perhaps a bit of rummaging behind the TV. ### 1. The Classic: Power Cycle, or "Turn It Off and On Again" Honestly, I know it sounds like something straight out of The IT Crowd, but it’s the very first thing you should always, always try. Electronics, bless their cotton socks, can get a bit muddled. A proper power cycle can clear out any temporary software glitches, flush the system's memory, and give it a completely fresh start. Don't just press the standby button on the remote, mind. That’s not a full reset. We need to go a bit deeper than that. Here’s the full Monty: * **Turn off your soundbar** using its power button or remote. * **Unplug the soundbar from the wall socket.** No kidding, physically pull it out. Same for your TV and any other connected devices like a Sky box or Blu-ray player. * **Wait a good 60 seconds.** Go make that cuppa. Or just stare blankly at the wall for a minute. This gives all the capacitors time to discharge and for the system to properly clear itself. * **Plug everything back in.** Soundbar first, then the TV, then other bits. Power them all on. See if that’s sorted it. Nine times out of ten, for a first-time glitch, this is all it needs. I’ve seen this work wonders countless times, even on gear costing thousands. ### 2. Check Those Cables: The Unsung Heroes (and Villains) Cables. They’re usually just sat there, doing their job, out of sight, out of mind. Until they’re not. A loose connection, a damaged cable, or even just using the wrong type can cause your soundbar to drop out faster than a lead balloon. This is especially true for HDMI ARC/eARC connections, which can be a bit finicky at the best of times. * **HDMI ARC/eARC:** This is usually the best connection for soundbars as it carries both audio and control signals. But it can be sensitive. Make sure the HDMI cable is plugged firmly into the "ARC" or "eARC" port on your TV and the corresponding port on your Vizio soundbar. Try a different HDMI cable if you have one spare – not all HDMI cables are created equal, particularly for ARC. Some older ones might not handle the bandwidth required, causing dropouts. I always recommend a decent HDMI 2.0 or 2.1 cable for ARC connections; they don't need to be gold-plated monstrosities, just well-made. * **Optical (TOSLINK):** If you're using an optical cable, check it’s seated correctly at both ends. Those little plastic covers on the plugs need to be removed first (seen that mistake more times than I care to admit!). Optical cables can also be easily damaged if bent too sharply. Look for any kinks or frayed sections. Sometimes a cheap, flimsy optical cable just isn't up to the job and will drop signal. * **Aux/RCA:** If you're going analogue, ensure the red and white RCA plugs are fully inserted and in the correct ports. Check for any fraying or damage to the cable itself. Analogue connections are less prone to digital dropouts but can suffer from hum or crackle if the cable is poor or damaged. I once spent an hour trying to diagnose a cutting-out issue on a mate’s system, only to find his cat had been using the optical cable as a chew toy. Little bugger! It’s always worth a thorough visual inspection. ### 3. The Wireless Woes: Bluetooth and Wi-Fi Interference Modern soundbars often rely on wireless connections for things like subwoofers and surround speakers, not to mention streaming audio via Bluetooth or Wi-Fi. And that, my friends, is where interference often rears its ugly head. Our homes are absolutely swimming with wireless signals these days, all vying for the same airwaves. * **Bluetooth Connections:** If you’re streaming music via Bluetooth from your phone or tablet, try moving the device closer to the soundbar. Walls, furniture, and even your own body can block the signal. Also, ensure there aren’t too many other Bluetooth devices active nearby, as they can cause congestion. Try disconnecting and re-pairing the device. * **Wi-Fi Interference:** Your soundbar’s Wi-Fi (if it has it for smart features or streaming) or the wireless connection to a Vizio subwoofer or surround speakers can be affected by your home Wi-Fi network. Things like microwaves, cordless phones, baby monitors, and even neighbouring Wi-Fi networks can cause problems. Try changing the Wi-Fi channel on your router if you suspect interference. Moving your soundbar or other wireless devices a little further away from your router can sometimes help too. It’s all about finding clear air. * **Subwoofer/Surround Speaker Wireless Link:** Vizio often uses a dedicated wireless frequency for its subwoofers and satellite speakers. Sometimes this link can drop. Check the lights on your subwoofer – consult your Vizio manual to see what a solid light means versus a blinking one. Often, you can re-pair them by holding down a button on the back of the soundbar and then the subwoofer. It’s a bit like pressing `Ctrl+Alt+Delete` for your wireless audio. I’ve spent ages chasing mysterious crackles, only to find a new smart thermostat using the same frequency. Drives you mad, that does. ### 4. HDMI CEC/ARC Settings: A Love-Hate Relationship HDMI Consumer Electronics Control (CEC), which Vizio calls "CEC" or "SmartCast CEC" (other brands have their own names like Anynet+, Bravia Sync, etc.), is designed to let your TV remote control connected devices. Great in theory. In practice? It can be a right pain in the backside, causing all sorts of audio dropouts and general confusion. * **Try Disabling CEC:** On your TV, dive into the settings menu (usually under "System", "External Inputs", or "Connections") and look for CEC or HDMI Control. Try turning it off. Then do the same on your Vizio soundbar if it has a specific CEC setting (check the manual). Sometimes, different brands of CEC just don't play nice together. You might lose the convenience of your TV remote controlling the soundbar, but it could solve your dropout issue. * **Firmware Update:** Both your Vizio soundbar and your TV will have firmware. Manufacturers often release updates to fix bugs, including CEC compatibility issues. It’s always worth checking their respective websites for the latest versions and instructions on how to update them. It can be a bit of a faff, but often essential. I had a customer with a perfectly good Denon amp connected to a Samsung TV via ARC, and it would drop out every ten minutes. Turned off CEC on the Samsung, problem gone. It’s a Jekyll and Hyde feature, that one. ### 5. Audio Settings: The Right Format, The Right Place Sometimes, the soundbar is cutting out because it’s struggling to process the audio format it’s receiving. This is particularly true for older soundbars or those on the more budget end of the spectrum that might not handle advanced audio codecs like Dolby Atmos or DTS:X as smoothly, especially if the source is constantly switching formats. * **TV Audio Output Settings:** Go into your TV’s audio settings. Look for an option like "Digital Audio Output" or "SPDIF Output". Try changing it from "Auto" or "Bitstream" to "PCM" (Pulse Code Modulation) or "Stereo". PCM is a simpler, uncompressed audio format that all soundbars can handle without issue. If the dropouts stop, then your soundbar or TV might be having trouble with the more complex compressed formats. This might mean you lose surround sound decoding, but it’s a good diagnostic step. * **Source Device Audio Settings:** If you're watching something from a specific device (Blu-ray player, streaming box, games console), check its audio output settings too. Again, try setting it to PCM/Stereo to see if the issue persists. * **Dialogue Enhancements/Night Mode:** Some soundbars and TVs have settings like "Dialogue Enhancer" or "Night Mode". Try disabling these temporarily, as they can sometimes interfere with how the audio is processed, leading to glitches. I had a lovely chap from Yate ring me up, tearing his hair out. His brand new Vizio was dropping out constantly watching Netflix through his PS5. Turns out, the PS5 was trying to send an Atmos signal the soundbar couldn’t quite keep up with. Switched it to Dolby Digital on the console, problem solved. Simple as that. ### 6. The Environment: Wireless Interference Beyond Your Cables As I touched on with Wi-Fi, our homes are full of things that can mess with signals. It’s not just other Wi-Fi devices, but a whole host of household electronics. * **Other Electronics:** Microwaves, cordless phones, baby monitors, even dimmer switches can emit electromagnetic interference. Try to keep your soundbar away from these if possible. Unplug them temporarily to see if the issue resolves. * **Physical Obstructions:** While less common for direct cable connections, if you have a Vizio soundbar with wireless surround speakers or a subwoofer, physical objects between them can cause signal loss. Thick walls, large metal objects, or even dense furniture can act as barriers. Try to ensure a clear line of sight if you can. It sounds a bit like an old wives' tale, but I’ve seen a microwave oven cause havoc with a wireless subwoofer link more than once. You wouldn't think it, would you? ### 7. Overheating: A Warm Welcome to Trouble All electronics generate heat, and soundbars are no exception. If a soundbar gets too hot, its internal components can start to misbehave, leading to intermittent audio dropouts or even complete shutdown as a protective measure. * **Ventilation:** Ensure your Vizio soundbar has plenty of space around it for air circulation. Don't tuck it into a tight cabinet or place anything on top of it that could block the vents. Give it room to breathe, especially around the back and sides. If it's crammed into a TV unit, try pulling it forward a bit. * **Direct Sunlight:** Avoid placing the soundbar where it gets direct sunlight for prolonged periods, especially in the summer. It’s an easy way to cook your electronics. I’ve seen soundbars in cabinets so cramped you’d think they were trying to hide from the taxman. No wonder they get hot and bothered. ## When All Else Fails: Time to Think Deeper If you