The Complete Guide To Troubleshooting Common LG Soundbar Problems

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Crackling audio. Muffled voices. Bass dropouts that shake your walls—or should be shaking your walls if the subwoofer were actually working.LG soundbar compatibility

Few things are as frustrating as an LG soundbar that suddenly starts malfunctioning and ruining your listening experience.

Troubleshooting common issues like no power, lost Bluetooth connections, lagging audio and unresponsive remotes can help restore your LG soundbar to flawless operation.

Following some key troubleshooting steps and reset procedures will get your soundbar running like new.

Before hauling your LG soundbar back to the store or paying for an expensive technician visit, try these troubleshooting techniques to identify and resolve the most widespread soundbar failures.

What If The LG soundbar not Turning on

An illustrative image related to troubleshooting LG soundbar power issues

One of the most frustrating issues with a soundbar is when it won’t power on at all.

If your LG soundbar is completely unresponsive when you press the power button, there are several steps to take to try getting it working again.

First, ensure the soundbar is getting power by checking that the power cord is firmly plugged into the wall outlet.

Make sure the outlet is active by plugging in a different device.

Verify that the power cable is properly connected to the soundbar as well.

Wiggle the cord at both ends to confirm it’s making a solid connection.

Check the remote control next.

Replace the batteries with a fresh set, as dead batteries are a common reason for the remote not being able to turn on the soundbar.

Point the remote directly at the soundbar IR sensor and press power – you should see an LED indicator light up on the soundbar if it receives the signal.

If that doesn’t work, try pressing and holding the physical power button on the soundbar itself for several seconds. Hold it down for 10-15 seconds to do a force power reset.

Additionally, unplug the soundbar power cord completely for 1 minute before reconnecting it. This power cycle often resets a frozen or unresponsive soundbar.

At this point if the LG soundbar still will not turn on at all, the problem likely points to a hardware failure.

The internal power supply may have malfunctioned.

Contact LG customer support about solutions like replacing the faulty power supply. Repair or replacement may be necessary if a component has failed.

What If LG Soundbar Disconnecting Or Losing Bluetooth Connection

An illustrative image related to troubleshooting Bluetooth disconnection issues with LG soundbars

Bluetooth connectivity can sometimes be finicky, which is frustrating if your LG soundbar keeps dropping its wireless Bluetooth connection to your TV or mobile device.

Frequent disconnections or lost connections can ruin your listening experience.

Start by ensuring the soundbar and Bluetooth device are within 30 feet and in a clear line of sight.

Eliminate any major obstructions between the devices.

Interference from other electronics can also impact Bluetooth signals.

Position the soundbar away from wireless routers, microwaves, cordless phones, and other potential sources of interference.

Check the sound settings on both the TV and soundbar and confirm the correct audio output mode is selected. For example, make sure the TV output is set to Bluetooth rather than TV speakers.

Cycle through different audio formats such as stereo, Dolby Digital, and DTS to find a compatible match.

You may need to delete the existing Bluetooth pairing from both devices and re-pair them from scratch. This can clear up connectivity issues and re-establish a strong wireless link.

Consult your device manuals for detailed pairing instructions.

Updating to the latest firmware version can also help resolve bugs that lead to wireless drops. Factory resetting the LG soundbar will wipe out any glitches as well.

If the Bluetooth connection problems persist after trying these tips, contact LG support about possible hardware faults with the wireless transmitter.

Repair or replacement may be necessary for persistent soundbar disconnections. With the right troubleshooting steps, your LG soundbar can maintain steady Bluetooth connectivity.

What If Audio Sync Issues With Video Lag

An illustrative image related to troubleshooting audio synchronization issues and video lag with a soundbar

One of the most annoying soundbar problems is audio delay or lag between the video and sound.

This lip sync error can make voices seem out of sync and delayed from the visuals during TV shows, movies, or gaming.

First, check your TV and LG soundbar settings for any “delay” or audio sync options.

There may be a calibration setting that allows you to tweak the delay and get the timing matched up properly between devices.

Refer to your TV and soundbar manuals for how to adjust these sync controls.

Try changing the audio format being transmitted to the soundbar.

Toggle between stereo PCM, Dolby Digital, DTS, and other formats to find the setting with the lowest lag.

Make sure your TV, soundbar, cables and content are all capable of processing high bandwidth formats like Dolby Atmos for minimal latency.

For an LG soundbar and LG TV setup, enable LG Sound Sync which synchronizes audio and video between compatible devices. This feature transmits audio digitally to avoid processing lag.

If sync problems persist, check that all cables used for soundbar connections are high-speed HDMI certified.

Older cables can bottleneck audio signals.

Connecting directly to the TV via HDMI ARC may prevent sync issues from going through an intermediary device.

Factory resetting the soundbar can clear up firmware glitches that cause delays.

As a last resort, upgrading to the latest soundbar software version may have latency optimizations.

Professional calibration by an AV technician can also fine-tune the lag.

With the right troubleshooting and settings adjustment, your LG soundbar can play perfectly synced audio.

What If Subwoofer cutting out

An illustrative image related to troubleshooting subwoofer cutouts in a soundbar system

Having your wireless subwoofer cut out randomly can be incredibly disruptive during movies and music.

LG soundbar subwoofers are supposed to stay wirelessly connected to deliver booming bass without cuts or dropouts.

Start by checking the basic subwoofer connections – make sure it is powered on, the wireless pairing light is illuminated, and all cables to the soundbar are securely connected.

Also check the volume dial on the sub itself and turn it up if needed.

Subwoofer dropouts typically point to wireless interference disrupting the connection.

Try repositioning the subwoofer closer to the soundbar within 15 feet for a stronger signal.

Eliminate any obstacles or large furnishings blocking the line of sight.

Turn off nearby electronics that emit wireless signals like routers, microwaves, baby monitors, etc. as these can cause interference.

Adjust the subwoofer channel to an alternate wireless frequency in the soundbar audio settings menu.

If the subwoofer continues cutting out, unplug both devices to force a hard reset.

Then manually re-pair the subwoofer with the soundbar to re-establish the wireless link. Refer to your owner’s manual for proper pairing steps.

Updating to the latest soundbar and subwoofer firmware can also provide wireless stability fixes. As a last resort, factory reset the soundbar to wipe out any system glitches causing dropouts.

Reliable, uninterrupted subwoofer performance is achievable by troubleshooting connectivity and interference issues.

What If LG Soundbar turns off randomly

Illustration of LG Soundbar turning off unexpectedly

An LG soundbar that inexplicably turns off by itself can be incredibly disruptive during listening sessions. Random shut-offs indicate a problem with power delivery, connectivity, or internal hardware.

As a first step, check that the power cord is firmly inserted into both the wall outlet and the soundbar.

Wiggle the cable ends to ensure a proper connection. Make sure the outlet is working by plugging in a different device. A loose power cable is often the culprit.

You’ll also want to disable any automatic power-saving features either on your TV or the soundbar itself, such as CEC, sleep timers, and auto standby.

These settings can inadvertently turn the soundbar off after a period of inactivity.

Random power cycles point to a possible internal hardware issue.

Check for blocked vents and ensure proper airflow around the soundbar to prevent overheating shutdowns. The internal components may be malfunctioning and need diagnosis by an LG technician.

Try factory resetting the soundbar to clear up any software bugs that may be erroneously triggering power-off commands. If random shutdowns keep occurring, replacement of the faulty internal parts may be necessary.

Persistent soundbar shut-offs can ruin your listening experience.

Methodically check connections, settings, ventilation, and hardware to isolate the cause.

Repair or replacement of damaged components is sometimes needed to restore reliable operation. With diligent troubleshooting, your LG soundbar can stay powered on when you need it.

The soundbar stuck in demo mode

Illustration of a soundbar stuck in demo mode with user trying to resolve the issue

Some LG soundbar models have a built-in retail demonstration mode used when on display in stores. This cycles the soundbar through different audio modes and volume levels automatically.

If your soundbar seems to be changing settings on its own, it may be stuck in demo mode.

You can exit retail demo mode by pressing and holding the power button and volume down button simultaneously on the soundbar for 5 seconds.

Keep holding both buttons till the LED lights on the soundbar turn off, indicating demo mode is disabled.

If that does not work, unplug the power cord from the back of the soundbar for 1 full minute. This forces a hard reset which should clear out any residual demo mode settings.

Reconnect the power cord to restart the soundbar in normal listening mode.

Alternatively, consult your soundbar owner’s manual for the button sequence to exit the retail demonstration on your specific LG model. For example, some may require holding the power and volume up buttons.

Performing a factory reset can also override any programming errors that cause persistent demo mode. This wipes the soundbar back to the factory default settings.

Once freed from demo mode, the soundbar will operate normally, maintaining consistent volume levels and audio modes.

No more annoying unpredictable cycling that demonstrates settings but ruins actual listening sessions. Just be sure to avoid any buttons that trigger display mode again. Your LG soundbar will now work properly as desired.

If demo mode still persists after resetting and power cycling, there may be a deeper firmware issue.

Contact LG support about possible service and repair to replace any malfunctioning components responsible for being stuck in the demonstration.

Thorough troubleshooting and resetting steps can return your soundbar to its intended performance.

What If The Remote Not Working

Image depicting a frustrated person holding a non-responsive remote in front of a soundbar

It’s very inconvenient when the remote control that came with your LG soundbar stops responding. This prevents you from changing volume, inputs, and settings from a distance.

There are several steps to take to get the remote operational again.

First, replace the batteries in the remote with a fresh set. Dead or low batteries are the most common reason for remotes to become unresponsive. Insert new batteries according to the polarity markings.

Check that you are pointing the remote directly at the IR sensor on the soundbar within 25 feet.

Obstructions and angling it away can disrupt the infrared signal.

Make sure the IR sensor is not blocked by objects as this will prevent signal reception.

Bright sunlight can also interfere with IR remotes.

Look for a pairing or sync button on the remote and soundbar. Press this to re-link the remote to the soundbar if they have lost connection.

Refer to the user manual for proper pairing procedures.

If the remote still does not work, the IR sensor inside the soundbar may have failed. You can use the control buttons on the soundbar itself in the meantime.

Contact LG support about a possible hardware issue with the internal IR receiver needing repair or replacement.

Some soundbar remotes are RF-based rather than IR, especially for rear speaker sets. Make sure fresh batteries are installed in all components. Re-syncing all remote pieces can restore connectivity.

With persistence and methodical troubleshooting, you can get an unresponsive LG soundbar remote functioning again for smooth volume and setting adjustments from your listening position.

Low volume or sound fading in and out

Image of a soundbar displaying low volume and a user adjusting the settings

Having your LG soundbar volume fade inconsistently in and out can ruin your TV, movie, and music listening experience.

Low sound with intermittent dropouts indicates some type of connectivity, configuration, or hardware issue.

Start by checking the volume settings on both the soundbar itself and your audio source device like a TV or smartphone.

Turn up the volume levels on the soundbar, remote, and source to ensure they are all set loud enough.

Make sure there are no accidental mute buttons enabled on the soundbar or TV remote. Toggling mute on/off can override low volumes. Also confirm no max volume limits or night modes are activated unnecessarily.

Check that the audio output settings match the soundbar connection method.

For example, a TV connected via Bluetooth needs to have Bluetooth audio output selected, rather than TV or optical speakers.

Try power cycling the soundbar and re-pairing wireless connections to resync the audio sources if needed. Interference could cause signal drops and low volume.

Inspect the physical soundbar speakers and ports for any damage, obstructions, or malfunctioning components causing the volume and fading inconsistencies. LG service may be required.

Performing a factory reset can clear up any software bugs or configuration errors that affect sound playback.

Fully updating the soundbar firmware may also contribute audio improvements. With the proper troubleshooting steps, consistent and robust soundbar volume can be restored.


Troubleshooting soundbar issues requires patience and a systematic approach. Start with the basics like connections, cables, settings, interference, and power.

Many problems can be resolved by simple steps like battery replacement, repairing devices, factory resets, or firmware updates.

For hardware faults like unresponsive buttons or defective components, service and repair from the manufacturer may be needed.

Being methodical and checking each potential point of failure can get your LG soundbar working properly again.

With the right troubleshooting techniques, you can restore flawless audio and minimize frustration from common soundbar problems.


Dominic is the chief editor of the Burton Acoustix blog which writes about acoustics and soundproofing to help readers with their queries and questions they might have with regard to improving any sound or noise issues that they faced in their life.