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Troubleshooting LG Sound Bar Problems

Max holds a B.S. in mass communications from SIU, an M.A. in communications from U of I, and is pursuing an MBA from Webster University.


LG sound bars come in various shapes and sizes and can accommodate nearly any budget. A sound bar is a great alternative to a full-blown home theater system, and can give your out-of-the-box TV audio more than a little added pop. Common issues you can run into with LG sound bars include no audio, power problems, remote control problems, and more. Use troubleshooting to work through these challenges and get your soundbar back up and running.

The LG SH7B comes with built-in Google Cast, Bluetooth support, and 4.1 channel sound.

The LG SH7B comes with built-in Google Cast, Bluetooth support, and 4.1 channel sound.

Sound Bar Won't Turn On

Check that the power cable connected to the LG sound bar is firmly connected. If the device still isn't working, verify that the outlet you're attempting to connect the sound bar to doesn't work by connecting a device that you know does, such as a lamp. If that device works, then you'll need to contact LG and raise the issue with them, or return the device to the reseller you purchased it from and see if you can exchange it.

No Sound from Sound Bar

  • If you are playing audio from a connected Bluetooth device, ensure that the volume is turned up on both the source device and the LG sound bar. Also, ensure that neither the sound bar or the source device is muted.
  • Verify that you've selected the correct input source. Check the back of the device to ensure you know what input to look for. Also, try cycling through the inputs in the event you misread the input the device was actually connected to and that audio is actually coming out of another input.

No Sound from Subwoofer

  • Make sure the subwoofer associated with the sound bar is firmly connected to the outlet it's plugged into.
  • If the unit is getting power, the issue is most likely associated with the Bluetooth connection. Un-pair and then re-pair the subwoofer with the sound bar to see if this resolves your issue.
The LG LAS855M is a curved sound bar that features 4.1 channel audio and pumps out sound at 360 watts.

The LG LAS855M is a curved sound bar that features 4.1 channel audio and pumps out sound at 360 watts.

Remote Control Won't Work

  • Ensure that the remote control is within roughly 30 feet of the LG sound bar. Also, ensure that the two devices have a clear line of sight to each other.
  • Try putting fresh batteries in the remote control to see if that resolves the issue. If the batteries in the remote are low, the device will connect intermittently and won't work at longer distances.

Can't Connect LG Sound Sync

The LG Sound Sync feature lets you control the audio volume associated with your sound bar through an LG TV that supports the Sound Sync feature. Setting the functionality up requires an initial pairing. If you've already paired the two LG devices but are not able to control the sound bar's volume using your TV remote, try un-pairing and then re-pairing the two devices in the Sound Sync section on your TV. Alternatively, if you didn't pair the device's previously, verify that you're TV actually supports the Sound Sync feature.

Low Audio Volume

If the audio being outputted through your sound bar feels low, try the following options:

  • Navigate to the audio settings on your TV and try changing the Audio Digital Output option to either Auto, Bitstream, or Primary Pass Through.
  • Check your TV's audio settings and verify that dynamic range compression (DRC) is turned off.

Poor Sound Quality

  • Nearby devices that send and receive wireless signals are the biggest offenders when it comes to interfering with the audio output quality of Bluetooth speakers. Consider moving these types of devices, such as baby monitors or other large electronic devices, to a different location.
  • The issue may not actually be with your LG sound bar, but rather with the audio quality of what you're watching. For example, if you're watching TV through either a dish service or an HD antenna, rain or a cloudy day could interfere with the audio feed associated with the show you're watching.

Connecting LG Smart TV to LG Sound Bar

Factory Reset

Try resolving any other issues you experience by resetting the device to its factory default settings by doing the following:

  1. Hold down the "+" button until you hear a beep come from the device and you see "Disabled" appear on the device's screen. Hold down the "+" button again until you hear it beep twice and "Reset" appears on the device's screen. The device has been successfully reset to its default factory settings.

© 2017 Max Dalton


Walter P Fulton on October 04, 2020:

my LG sound bar goes on spontaneously between 3:10 and 3:20 am every day. Help please! we are not super technical.

DAUZI MLAUZI on September 23, 2020:

I unable to activate the sound system mode i can't even open the audio app it's totally blank and please help me

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Donna Duncan on September 20, 2020:

sound keeps going off on my LS4Y sound bar. watching tv and suddenly no sound, turn tv off and back on and sound comes back on. has anyone else had this issue

Francis Eastman on September 19, 2020:

Soundbar won't reset to factory settings

Helen on July 20, 2020:

There is a acid type liquid thats always leaked from underneath my sound bar,what could this be.

Cody Swayze on January 05, 2020:

I have a lg sound bar model number is slm4r and I have a wireless speaker kit model number spj4-s and the wireless speaker kit will not pair to the sound bar any suggestions

John adair on December 28, 2019:

The sound on the big screen does not match the voice

Elsie Leffel on August 23, 2019:

Did anyone answer this question:Linda K Baker

4 months ago

Remote will not operate. Have changed batteries.Lined up properly. Just stopped working. Any suggestions

Nina colton on August 10, 2019:

My Sony sound bar keeps cranking up the volume independently

Mark on June 21, 2019:

Lg tv and sound bar, sound bar keeps switching to bt from opt

Linda K Baker on April 08, 2019:

Remote will not operate. Have changed batteries.Lined up properly. Just stopped working. Any suggestions

Mark A. Bollinger on March 10, 2019:

Sound on the Sound bar bar just goes off .have to Power off and back on again, does this every hr or so sometimes

Robbie on February 08, 2019:

It said s protec

Alex on January 25, 2019:

Do you need optical and hdmi for soundbar to work

Richard on September 23, 2018:

The buttons on the sound bar are not working. I can still get sound with optical connection, however, the screen says optical instead of LG OPT. Also, not all of the sound bar remote control buttons work and I can't control the sound bar with the LG magic remote.

Nandkishor Madhavi on August 09, 2018:

My Soundbar is showing VOL MIN error

Mike white on July 17, 2018:

Didnt reset nothing didn't do nothing just says s protec on April 02, 2018:

sound fluctuats from high to low for no reason

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