How to Fix Sound Not Working on LG Smart TVs

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Written by Jason Lin

Lg Tv Sound Not Working

Having issues with no sound or audio cutting out on your LG TV? Don’t worry – you’re not alone. Many LG TV owners face sound problems at some point.

The good news is that most LG TV sound issues can be fixed with some simple troubleshooting steps. This comprehensive guide will walk you through all the potential solutions to restore sound on your LG smart TV.

Common Reasons for LG TV Sound Not Working

Before jumping into the fixes, it helps to understand why your LG TV may have lost sound in the first place. Here are some of the most common culprits:

  • Software bugs – Errors in the TV software can disrupt audio. Power cycling the TV often fixes minor software glitches.
  • Wrong sound settings -Incorrect audio output configuration is a top reason for missing TV sound.
  • Faulty cables – Damaged HDMI or audio cables prevent sound transmission.
  • Outdated firmware – An outdated TV software version can trigger sound issues.
  • External speakers – If you don’t hear sound from external speakers, the problem may lie with the speaker setup and connections.
  • Streaming devices – Issues with streaming boxes, Blu-ray players and game consoles connected to your TV can also stop sound output.

Now let’s discuss the top troubleshooting tips and solutions to bring back sound on your LG TV.

10 Ways to Fix LG TV With No Sound

Follow these methods in order to diagnose and fix your LG TV’s audio problem:

1. Power cycle the LG TV

The first thing to try with any TV sound issue is a simple power reset:

  • Unplug the TV power cable from the wall outlet.
  • Press and hold the power button on the TV for 30 seconds (not the remote power button).
  • Leave the TV unplugged for 2 full minutes.
  • Plug the power cable back in and turn on your LG TV.
Unplug The TV

This power cycling or soft reset process will clear out minor software glitches that can disrupt audio. It essentially functions like a reboot to refresh the TV’s internal components.

2. Check LG TV volume and mute settings

Before you panic about your LG TV having no sound, check the basic stuff first:

  • Verify the TV volume is actually turned up high enough to hear.
  • Make sure the mute function is disabled. Accidentally pressing mute is common.
  • Try pressing volume up/down on the TV set itself if not working with remote.

It’s easy to overlook something simple, so rule that out first.

3. Run an LG TV sound test

Your LG TV has a built-in sound tester to diagnose audio issues. This should be one of the first troubleshooting steps:

  • Access the Settings menu and select Sound > Sound Test.
  • Follow the prompts to initiate the test sounds.
  • If you cannot hear the test tones, continue on to further solutions.
Lg Tv Sound Test

The sound test will confirm whether or not your LG TV speakers and internal audio components are working properly before trying other fixes.

4. Adjust LG TV sound settings

Incorrect sound output configurations are often the culprit behind sound cutting out on LG smart TV models:

  • Within TV Settings, access the Sound menu.
  • First, disable Smart Sound Mode if enabled.
Lg Tv Smart Sound Mode
  • Under Sound Out, select Internal Speakers.
  • Disable Dolby Atmos audio if turned on.
  • Switch Digital Sound Out from Auto to PCM.
Lg Tv Digital Sound Out From Auto To Pcm

Cycling through the various audio options essentially forces a refresh to override any incorrect settings that may be silencing sound.

5. Update LG TV software

An outdated TV software version can potentially trigger sound problems on LG smart TVs models.

You’ll want to download the latest LG webOS firmware update:

  • Go to Settings > General > About This TV
  • Select Software Update and Check for Updates
  • Proceed to install any available updates.
Lg Tv Check For Updates

Updating to current LG firmware provides compatibility fixes for bugs that may be interfering with audio output.

6. Factory reset the LG TV

If adjusting settings doesn’t restore sound, the nuclear option is a full factory reset:

  • From the General tab in Settings, select Reset to Initial Settings
  • Confirm the factory reset to wipe all customizations and revert TV back to default state similar to fixes for Disney+ loading issues.
Reset To Initial Settings

This will erase your settings and installed apps as a last resort to clear any problematic configurations messing up sound.

7. Change HDMI cables and ports

Sound issues that only impact devices connected via HDMI points to a cabling connectivity problem.

Troubleshoot HDMI input ports and cables:

  • Make sure HDMI cable connections at both ends are secure and firm.
  • Switch to different HDMI ports on the LG TV if sound missing on just one device.
  • Try replacing current HDMI cable with a different certified HDMI cable.
Hdmi Cable

Doing so will help determine if problem lies with a particular HDMI port or faulty cable.

8. Reset A/V settings

Your LG TV gives option to reset audio and video settings to default:

  • On original LG remote, press the Mute button 3 times quickly
  • When the A/V Reset prompt appears, Confirm the reset
Lg Tv Av Reset

This quickly reverts any changes made to the core A/V presets without a full factory reset. Worth attempting before a deeper TV reset.

9. Troubleshoot external speakers

If audio cuts out when streaming sound through external speaker system, focus troubleshooting efforts there:

  • Verify HDMI cable from LG TV to receiver/sound system is securely connected like these best TVs for garage use
  • Try connecting external speakers to different HDMI ARC or Optical port
  • Test external speakers with a different audio source such as these remotes for YouTube TV to confirm speakers working

Issues between your LG TV and other audio gear likely point to a setup issue versus general TV sound problem.

10. Contact LG support

If you are still experiencing sound issues on your LG TV after trying the above fixes, it’s time to call for reinforcements:

  • LG customer support: 1-(800) 243-0000
  • Hours: 7am – 11pm EST daily

An LG support rep can provide tailored troubleshooting tips for your specific model and issue. They can also facilitate warranty-based repair if needed.

Key Takeaways and Next Steps

Getting sound back on your LG smart TV doesn’t have to be frustrating or time-consuming if you approach it systematically:

  • Start by power cycling and checking volume settings
  • Run built-in LG TV sound tester
  • Tweak audio output configurations
  • Update TV software and hardware
  • Try HDMI connectivity fixes
  • Reset A/V presets
  • Confirm external speakers working properly
  • Call LG TV support as needed

Following these steps will help accurately diagnose why sound stopped working on your LG TV and how to restore normal audio 98% of the time.

Still having issues? Don’t hesitate to call LG or initiate a warranty service request if covered. Their technicians can fully inspect both internal TV components and external accessories to pinpoint the root cause in cases of no sound.

Frequently Asked Questions

Here are answers to some common questions related to resolving no audio problems for LG smart TVs:

How do I get sound back on LG TV Netflix app?

If you lost sound specifically on a streaming app like Netflix or Hulu, try closing and relaunching the app, reinstall the app, or power cycle your LG TV. This typically fixes app-specific sound issues.

Why did my LG TV sound stop working after power outage?

Some LG TV audio issues arise after power fluctuations or storms which disrupt signal connectivity much like various Hulu error codes disrupting streaming. Check HDMI connections and perform a factory reset if sound problems persist after electricity is restored.

How do I control LG TV volume without remote?

If having sound problems due to remote issues, use the manual buttons on your LG TV set to adjust volume up/down or access settings to troubleshoot. Alternatively use LG ThinQ mobile app as a smart remote.

Can LG TV optical port support Dolby Atmos?

No, you’ll need to turn off Dolby Atmos and use a format like PCM that optical cables support for multi-channel audio pass-through from external devices. Use HDMI ARC for Dolby soundbars.

Restoring Sound on Your LG Smart TV

Dealing with a silent LG TV can certainly be frustrating. But take a methodical troubleshooting approach focusing on software resets, firmware updates, settings adjustments and connectivity switches as needed.

With consistent sound issues, don’t hesitate to leverage LG tech support and warranty services if covered. But hopefully these 10 fixes will resolve your lost audio and get your LG smart TV sounding great again.

Let us know in the comments if any other tips worked for you!

Jason Lin
Tech enthusiast with 10+ years of experience, providing guides, reviews, and tips on Smart TVs, streaming devices, and TV apps.

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