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LG TV No Sound: 9 Ways To Fix It In 30 Seconds (2023)

LG TV No Sound

Many things are impossible to do within 30 seconds.

Finishing an entire Costco pepperoni pizza…

Running a mile’s distance…

Typing out the lyrics of American Pie.

But do you know what’s possible to accomplish in half a minute?

Fixing an LG TV’s audio problem. So…

Continue reading to discover:

  • 9 quick fixes to restore your TV’s sound.
  • What particular Picture Setting you’d need to adjust.
  • A hidden menu on LG TV that may help restore its audio instantly.
  • And a lot more…

Why does my LG TV suddenly have no sound?

Your LG TV suddenly has no sound because of a glitch in your TV or external speaker. You may power cycle your TV and the external audio device to restore your sound. Also, you may try to reset your TV’s audio settings. You can do that by pressing the mute button 3 times. And then clicking AV Reset.

LG TV no sound: 9 fixes

#1: Check if your TV’s on mute

It may sound obvious. But you never know.

You may have been too focused on what you’re watching. That you didn’t realize you’ve pressed the mute button. 

Maybe your fur baby accidentally did it.

Or perhaps your LG remote’s not working properly. So it’s been sending out some random signals to your TV.

So the first thing you should do when your volume suddenly goes out…

Grab your remote. Ensure that you’re not on mute. And turn up the volume.

#2: Do a modified power cycle on your TV

Many LG TV users have complained about various audio issues. 

And the usual cause is a temporary malfunction of the TV. And in some cases, a minor glitch in the webOS.

A fast way to resolve that is by doing a modified power cycle.

When power cycling or restarting, you usually just unplug a device.

With a modified power cycle, you’ll also have to press the TV’s power button. 

So what’s the logic behind it?

Pressing the power button helps completely drain the TV’s power.

This is the proper way to do it:

  1. Unplug your TV from its power source.
  2. Press the TV’s power button and hold for 30 seconds.
  3. Release the button and wait for about a minute.
  4. Connect the TV back to the source.
  5. Press the power button to turn it on.

The modified restart was enough to restore their TV’s audio for many.

#3: Check your external audio device

Do you happen to be using an external audio device?

A soundbar, perhaps? Or a Bluetooth speaker?

If so, you may want to check them as well.

As with your TV, ensure that your external audio device isn’t on mute. And make sure that it’s not defective.

You may try to use it with another TV. Or a computer or laptop. Just to verify that it’s actually working.

In addition, you may also perform a power cycle on the device.

Soundbars have power cords. So if you’ve connected one to your TV, unplug it from the outlet.

For a Bluetooth speaker, you may press the power button. And wait for about a minute before turning it back on.

#4: Check for defective cables or ports

There are 2 types of cables you can use to connect an audio device to your TV:

These cables are responsible for transmitting audio and video.

So naturally, they can also cause picture or sound issues. Such as a white screen problem

Or a suddenly muted sound.

That’s why you should also pay attention to these connectors.

If you’re using one, ensure that you securely attach it. Both to the back of the TV and the external audio device.

You may also try to reseat the cable. Meaning switching the sides around. 

Disconnect the one end that went into the TV. And connect it to the external device instead. 

And vice versa.

Or, if you have a spare HDMI or optical cable, use that instead.

Moreover, check if it’s the HDMI or optical port that’s faulty.

Modern TVs have multiple HDMI ports. So try to plug your HDMI cable into another port.

#5: Ensure that the Sound Out setting is correct

Another likely culprit for your sound problem is an incorrect audio setting.

Particularly with LG TV’s Sound Out.

Are you only using the TV’s speakers?

If so, you should set the Sound Out to Internal TV Speaker.

And if you’re using an external audio device…

What cable did you use to connect?

If you used an HDMI, then the Sound Out setting should be HDMI ARC.

As per using an optical cable, it should be Optical. And Bluetooth for Bluetooth devices.

It’s easy to correct the setting. Here’s how:

  1. Click your TV remote’s Home button.
  2. Navigate to Settings and select it.
  3. Select Sound.
  4. Click the Sound Out option.
  5. Select the correct audio source.

This should instantly restore your TV’s sound. But if not, try to restart your TV again for the change to take full effect.

#6: Adjust your TV’s other audio settings

In most cases, correcting the Sound Out is enough to fix an audio issue.

But if your TV still has no sound…

You should also make changes to other audio settings. Including:

  • Dolby Atmos.
  • Digital Sound Out.
  • Adaptive Sound Control.

Dolby Atmos is probably a familiar name to many. 

It’s a popular surround sound technology. And it’s present in many modem smart TVs.

But you should switch it off if you’re having audio problems.

How to switch off Dolby Atmos

  1. Click your remote’s Home button.
  2. Select Settings.
  3. Select Sound.
  4. Highlight Dolby Atmos.
  5. Toggle the switch off.

Now please stay within the Sound settings.

Next up is disabling the Adaptive Sound Control

It’s actually a great feature. It levels the overall sound of your TV. And it’s especially helpful in dealing with loud TV commercials.

But sometimes, it may also cause problems with the TV’s sound.

How to disable Adaptive Sound Control

  1. Under the Sound menu, look for Adaptive Sound Control.
  2. Click the toggle button to off.

And lastly, if you’re using an optical cable…

There’s another setting under Sound Out that you need to change. And that’s the Digital Sound Out

You just need to ensure that you set it to PCM. Or Pulse-Code Modulation. 

It’s a technology for converting analog audio to digital.

How to change the Digital Sound Out setting

  1. On the Sound menu, click Sound Out.
  2. Click Optical.
  3. Set the Digital Sound Out to PCM.

I know you’d also love a video guide on how to go through these settings. So check this out:

#7: Reset your TV’s audio settings

If your TV still has no sound after adjusting the various audio settings…

Then a reset may solve the issue. Not a factory reset. At least not yet.

What’s needed is an AV, or Audio-Video, reset.

This is a neat hidden feature on LG TVs. If you’re dealing with many audio or video problems, you may quickly reset their settings via this option.

And it won’t affect any other aspect of your TV.

Simply follow these steps:

  1. Grab your TV remote and click the Mute button 3 times.
  2. An AV Reset option should appear on your screen.
  3. Click OK to proceed with the reset.

#8: Update your TV’s firmware

Update Your TV's Firmware

This one may take a little more than 30 seconds. But you should also ensure that your LG’s webOS is up to date.

Because sometimes, the TV’s OS may have bugs in it. And newer firmware versions usually patch those.

Here’s how to update your TV’s OS:

  1. Press your TV remote’s Home button.
  2. Select Settings.
  3. Scroll all the way down and select All Settings.
  4. Click General.
  5. Look for About this TV and click it.
  6. Check the Allow automatic updates option.
  7. Select Check for updates.

If your TV finds updates, it’ll download and install them. And by checking the Allow automatic updates option, you won’t need to look for updates constantly.

As long as your TV has stable WiFi, it’ll always install fresh OS updates.

#9: Reset your TV to initial settings

This is another fix that’ll take more than half a minute. 

But as a final resort, you may also restore your TV to its original settings.

Also known as a factory reset, this will erase all of your info. You’ll have to redownload your favorite apps. And recalibrate the TV to your liking.

This is how to factory reset an LG TV:

  1. Press the Home button on your remote.
  2. Click the Settings icon.
  3. Navigate to General and click it.
  4. Look for Reset to Initial Settings and select it.

The factory reset should take about a minute or 2. Your TV may reboot multiple times during the process.

Bonus: Contact LG to schedule a repair

If none of the audio setting adjustments restore your TV’s sound…

It’s likely a problem with the TV’s main board. And for that, you’d need a technician to repair it.

You may contact an LG chat support agent through their website. They’ll be able to help with further troubleshooting. At least before you decide if your TV really needs repair.

You may also request a repair online. Or search for your nearest LG service center.

You might also want to know: Where Are LG TVs Made? 8 Countries Revealed