LG TV No Sound: The One Fix That Worked For Me

We had a severe power outage in our area yesterday.

After several fluctuations, the power was restored in a couple of hours.

While none of my other appliances were affected, my LG TV lost its sound after the incident.

The videos played perfectly, but I couldn’t hear audio from any app.

I rebooted my TV, but nothing changed.

Researching the problem over the Internet, I found out that power fluctuations can trip the audio settings of TVs.

With this reason in mind, I tried multiple solutions to restore my TV’s sound before coming across a simple yet effective fix.

Here’s how I got the sound back on my LG TV within a few minutes: 

If your LG TV has no sound, unplug it from the power supply, press and hold its Power button for one minute, plug the TV back in, and switch it on. 

What Causes the No Sound Problem on an LG TV?

There are different types of audio issues that you can face with your LG TV.

For some, the sound may not work on a particular app or input source.

While for others, the sound may be out completely.

The most common reasons for not having sound on an LG TV are: 

ReasonHow to Fix
Minor software issuesSoft reset the TV
Wrong output selectionSelect the correct ‘Sound Out’ option
Faulty audio deviceTroubleshoot and repair the audio device
Faulty appsUpdate the apps
Faulty input sourceTroubleshoot and repair the input source
Major software issuesFactory reset A/V settings
Hardware issuesRepair the TV

Once you identify the problem on your LG TV, you can apply the necessary fix.

Note: It should go without saying but before troubleshooting your LG TV, make sure you haven’t accidentally put it on mute. If it’s on mute, unmute it and turn up the volume. 

Soft Reset Your LG TV

Most times, your LG TV loses sound because of a minor software bug.

The quickest way to get sound back is to perform a soft reset.

A soft reset will wipe out all minor software bugs in your TV, drain any residual power, and force it to reset. It will not affect any of your apps or settings. 

This method is also a proven fix for LG TV not connecting to WiFi.

To soft reset your LG TV: 

  1. Unplug the TV from the power socket.
  2. Press and hold the Power button on the TV for 60 seconds. You can find this button on your TV’s bottom or side panel.
  3. Plug the TV back in and turn it on using the power button. 

Once your LG TV boots up, check if the sound works. If not, proceed to further troubleshooting. 

Perform a Sound Test of Your LG TV

At times, audio problems on an LG TV are caused by incorrect settings on the TV or the connected audio device.

A sound test will check whether the fault lies in your TV or the external device. The test can also help you rectify the faults.

Note: The sound test is not available on all LG TV models. 

To carry out a sound test on an LG TV: 

  1. Press Home on your TV’s remote.
  2. Navigate to Settings.
  3. Scroll down to the Sound or Audio menu.
  4. If available, choose the Sound Test option. 

If your LG TV has WebOS 5.0, you need to navigate to Settings → All Settings → Support → Additional Settings, and then choose ‘Sound Test’.

In case your LG TV has WebOS 6.0, navigate to Settings → All Settings → Support → Quick Help → Check Items → Self-Diagnosis of TV Settings → Sound, and then select ‘No Sound’ to perform the sound test.

Once you click on the test, your TV will troubleshoot the sound by itself.

Follow the on-screen instructions to get the sound back.

The sound test will default the audio output to your LG TV’s internal speakers.

If you are able to hear the sound from your TV after the test, your problem is resolved.

In case you use an external audio device and cannot hear a sound on it, it can be an issue with your output selection. 

Choose the Correct ‘Sound Out’ Settings on Your LG TV

While using any audio device with your LG TV, you need to make sure to select the proper settings for sound output.

To change the Audio Out settings on an LG TV: 

  1. Press Home on your TV’s remote.
  2. Go to Settings.
  3. Click on the Audio or Sound menu.
  4. Turn off Dolby Atmos.
  5. Now, choose Sound Out.
  6. Select Optical.
  7. In Digital Sound Output, use the arrows to change it to PCM

Note: If you’re using an Amazon Fire Stick or Roku device via an HDMI port, you need to go to ‘Audio’ in the Device settings, click on ‘HDMI’, and change it to ‘PCM-Stereo’.

Once done, check the sound on your TV. 

Check Your LG TV’s External Audio Device

If the sound is working on your TV’s speakers but not on the connected audio device, you need to check it for faults or wear and tear.

Once you have set the ‘Sound Out’ setting in your LG TV correctly, proceed to troubleshoot your audio device via these steps: 

  • Ensure the audio device is turned on and not on mute.
  • Make sure to select the correct sound input source on the device.
  • If you are using an audio cable, ensure that it is plugged in firmly into your TV’s Audio Out port and your device’s Audio In port.
  • In case the cable is damaged, try using a new cable.
  • If you use a Bluetooth speaker, make sure it is properly paired with your TV. 

In case none of these troubleshoots help, try using your audio device with another TV or laptop and check if the sound works.

If you get no sound, you need to get the device checked and repaired.

If you can hear the sound while connected to another TV, your audio device is working fine.

The problem lies with your LG TV and needs further investigation. 

Check Your LG TV’s Input Sources

Sometimes, the audio issues may not be in your LG TV but in the input source that you are using.

If you are using a cable connection, set-top box, or DVD player, you need to troubleshoot these devices to resolve the no-sound issue.

First, switch to a different input and check if you can hear the sound on your LG TV. If yes, it means the previous input source is at fault. 

To resolve sound issues with a specific input source:

  • Make sure the A/V cable you are using is plugged in correctly into your TV and the input device.
  • Plug the cable in firmly at both ends.
  • Use a different cable

If possible, test the input source on another TV and check if the sound works. 

Fix Your LG TV’s Sound Not Working on a Particular App

If you are facing sound issues only on a particular channel or app, it’s not a problem with your LG TV; rather, it means the channel or app is faulty.

If there is no sound on a particular channel on your TV, you need to wait till the fault is rectified by the channel provider.

If there is no sound on an app on your TV, you need to update the app to fix it.

To update an app on an LG Smart TV: 

  1. Press the Home button on your TV’s remote.
  2. Click on LG Content Store.
  3. Navigate to Apps in the menu on top of your screen.
  4. Choose My Apps.
  5. Select the app you’re facing problems with.
  6. Click on Update if available. 

Once the update is done, you should get sound back on your LG TV. 

Factory Reset Audio and Video Settings on Your LG TV

If the above-mentioned troubleshooting methods don’t get the sound back on your LG TV, you will need to perform a hard factory reset of its A/V settings.

Doing so will delete your saved audio and video preferences. 

To reset the A/V settings of your LG TV: 

  1. Press Home on your TV’s remote.
  2. Press the Mute button three times on your remote.
  3. On the prompt, select A/V Reset

This will reset all audio and video settings to the factory default version.

If you still cannot hear sound on your LG TV, it can be a problem with the TV’s hardware.

In that case, your best option is to contact LG Support to get your TV repaired. 

Bring Back the Sound

A TV with no sound is a story of moving photos, which can be really boring and unentertaining.

That was exactly how I felt when I lost sound on my LG TV because of a sudden power outage.

Thankfully, a soft reset of the TV was all I needed to bring back its sound.

While I had lost the sound completely, you may also face this problem on a particular app or when connecting an external audio device to your TV.

In such cases, update the affected app and select the correct ‘Sound Out’ setting to resolve your problem. 

Frequently Asked Questions

How do I fix my LG TV having a black screen with no sound?

To fix your LG TV with a black screen and no sound, check its HDMI cable for any loose connections.

Plug the HDMI cable firmly at both ends or try a different HDMI port on your TV. 

How can I use my LG TV without a remote?

You can control your LG appliances via your smartphone using the LG ThinQ app, available for both Android and iOS devices. 

Why can’t I change the volume on my LG TV?

You may be unable to adjust the volume on your LG TV because of a faulty remote.

In this case, try changing the volume using the control buttons on your TV. Alternatively, you can use the LG ThinQ app. 

About the author

Maria Chan, or MC, as we call her, is the genius girl-boss who gave up on her cushy silicon-valley job to grind it out with us. Her undying pursuit of wanting Zeebox to the best makes it very clear that she has no interest in running a generic tech-site.