There are many possible causes for an LG TV to suddenly stop outputting audio. The good news is, most sound problems can be fixed yourself without an expensive technician visit.
From incorrect settings to faulty cables and bad updates, we’ll cover all the common reasons an LG TV loses sound. By methodically working through the solutions below, you can isolate the specific issue and correct it to restore normal audio function.
This guide will take you through step-by-step troubleshooting fixes for how to fix an LG TV with no sound. We’ll start with quick fixes like settings and connections. Then cover more in-depth resets, firmware updates, and hardware fixes if needed.
How to Fix an LG TV with no Sound with 15 Easy Steps
Stick with us through all 15 steps, and your LG TV’s sound problems will be solved in no time!
Step 1: Check Your LG TV’s Volume Settings
The first place to start is ensuring your LG TV’s volume settings are correct:
- Press the volume up button on your remote to see if the TV volume needs to be increased from a lower setting.
- Check for a mute icon on the screen and select unmute if it is accidentally enabled.
- Access the audio settings menu and confirm TV speakers are enabled and set to a reasonable volume level.
Sometimes the volume gets turned down or muted without realizing it. Start by checking the basics before moving to more complex solutions.
Things to check:
- Volume level set to 0 or a low value
- Mute function accidentally toggled on
- Volume change via remote not working
- Volume slider grayed out in settings menu
- TV speakers disabled/external speakers enabled
Cycle through the volume controls in different ways to narrow down any issues.
Step 2: Verify External Audio Devices Connected to Your LG TV
Do you have external speakers, a soundbar, or other audio device hooked up to your LG TV’s outputs?
Make sure any devices connected directly to your TV’s audio ports are powered on and set to a audible volume. Also ensure they are not muted or set to the wrong input source.
If you use a soundbar or speakers with your LG TV, be sure those are operational before continuing.
Specific things to verify:
- Soundbar/speakers are powered on
- Volume set reasonably high on external devices
- Mute is not enabled on external device
- Soundbar input set to correct source (HDMI ARC etc)
- Audio cables fully connected to TV audio outputs
Methodically check each setting and connection to rule out external device issues.
Step 3: Check Your LG TV’s Audio Output Configuration
Navigate to your LG TV’s audio settings menu and confirm that the correct audio output mode is enabled:
- TV Speaker should be set as the audio output when using the built-in LG TV speakers.
- Set audio output to External Speaker or HDMI ARC if you have those device types connected.
- Disable any secondary Surround Sound or SAP audio modes that could interfere with regular stereo output.
Detailed settings to verify:
- TV Speaker option is selected
- External Speaker/ARC modes disabled if using TV speakers
- Secondary SAP/surround modes turned off
- Analog/digital audio out formats match your device capabilities
Try toggling through the different audio output modes during testing to isolate problems.
Step 4: Inspect All Physical Audio Connections to Your LG TV
With your LG TV powered off, carefully inspect all physical cables connected to audio inputs and outputs. This includes:
- HDMI cables from cable/satellite box, Blu-ray player, game console, etc
- Optical digital audio cable to soundbar/receiver
- RCA or 3.5mm analog stereo audio cables
Remove each cable and firmly re-seat them for a tight connection. Also try swapping cables to identify any faulty ones.
Pay close attention to:
- Loose HDMI connections
- Optical/RCA cables fully inserted
- Cables plugged into correct ports
- Damage, fraying or corrosion on cables
- Trying different cables to test functionality
Getting cables firmly seated is crucial to getting sound working again.
Step 5: Power Cycle Your LG TV and Connected Devices
Unplug the power cables for your LG TV and any source devices connected to it like a cable box. Leave them unplugged for 30 seconds to reset everything.
Plug the devices back in, power up your LG TV, and check if sound returns. This re-initializes audio components and handshakes.
The power cycle process:
- Unplug TV and source devices from power
- Wait minimum 30 seconds
- Plug devices back in and power on TV
- Check for audio function restoration
Power cycling allows all connected devices to re-establish proper audio communication.
Step 6: Test Audio Directly From Input Sources
For devices like a DVD player, game console, or cable box connected directly to your LG TV, verify those source components are actually outputting audio properly:
- Set your LG TV input to that source.
- Then check for sound coming directly from that source device itself when powered on.
If audio plays directly but not through the TV, the issue lies in the LG TV’s settings or connection to that source device.
How to test:
- Set TV to input’s native source
- Play content with audio directly on source device
- Listen for adequate sound volume from source itself
- If no audio, issue is with the source component
- If it works directly, TV is likely the problem
This helps narrow down where the root cause of the no sound issue resides.
Step 7: Update Firmware on Your LG TV
LG periodically releases firmware updates for its smart TV models. These updates can resolve bugs and audio issues.
Go to your LG TV’s menu to check the current firmware version installed. Then visit LG’s website to find your TV model and see if an updated firmware is available.
Follow LG’s instructions to download and install the latest firmware update if available. This can clear up software-related audio problems.
Firmware update tips:
- Note current firmware version in Settings menu
- Check LG website for newer firmware for your model
- Download update file to USB drive if available
- Follow prompts to install firmware update
- Perform factory reset after updating
Keep your LG TV firmware up-to-date to fix bugs.
Step 8: Factory Reset Your LG TV
If you’ve checked connections and settings but your LG TV still has no sound, a full factory reset may be required. This reinstalls the TV’s software from scratch.
Caution: Backup any custom settings before resetting. Then enter your LG TV’s Setup menus to select Factory Reset and initialize the TV software to default.
This wipe has a good chance of fixing any corrupted audio issues caused by buggy updates or glitched settings. Try it before moving to hardware fixes.
Resetting your LG TV:
- Backup current settings if possible
- Navigate to TV Reset menu
- Select Factory Reset/Initialize option
- Confirm reset to wipe TV software
- TV will reboot and reinstall fresh software
- Run through setup menus again
Factory resetting your LG TV software can often fix sound issues caused by bad updates or settings.
Step 9: Test Different Audio Sources for Your LG TV
To further pinpoint the cause, attempt playing alternate audio sources through your LG TV:
- Stream audio via the built-in webOS apps – does that work properly?
- Connect computer speakers via the 3.5mm headphone jack. Does audio play?
- Swap set top box HDMI connections with a streaming stick or game console. Same results?
Testing different arrangements helps determine if the issue is input specific or a problem with the LG TV itself. Substitute components to isolate the fault.
Alternate audio source tips:
- Use built-in streaming apps to test sound
- Connect headphones to test 3.5mm jack audio
- Swap HDMI cables between sources
- Try optical/RCA cables to external speakers
- Identify if issue is input or TV-specific
Try as many audio sources as possible to narrow down the culprit.
Step 10: Update Firmware on External Devices Connected to Your LG TV
If your LG TV audio works fine through its built-in apps and headphone jack, but exhibits problems from one HDMI input source (like a cable box), try updating that external device’s firmware.
The manufacturer may have released a firmware fix that corrects compatibility issues with your LG TV’s audio. Always keep Firmware up-to-date.
Updating external device firmware:
- Note current firmware on cable box/Blu-ray player etc
- Check manufacturer site for firmware updates
- Download and install latest firmware to device
- Retest audio from source to TV after updating
Keep all source components and TV firmware current.
Step 11: Use Analog Audio Cables as a Workaround
One workaround for HDMI-specific audio issues is using analog RCA or 3.5mm stereo audio cables instead. These cables connect from your audio source device to the analog audio IN ports on the LG TV.
While not ideal, this may allow audio to function normally while you troubleshoot the root HDMI problem.
Analog audio cables:
- Use RCA or 3.5mm cables from source to TV
- Connect to the analog audio IN ports
- Set TV to appropriate analog audio input
- Test sound using analog connection instead
- Helps narrow down HDMI-related issues
Analog can help diagnose the problem while restoring audio.
Step 12: Adjust HDMI EDID Settings on Your LG TV
HDMI communication issues between your source device and LG TV can manifest as intermittent audio.
Try tweaking the HDMI EDID settings in your LG TV’s audio advanced settings menu. Refer to your TV’s manual for the specific EDID configurations.
This reconfigures how audio data is transmitted over HDMI ports. Toggle these settings until you get consistent audio.
HDMI EDID settings:
- Find HDMI EDID menu in TV settings
- Adjust audio EDID to different values
- Test audio stability from sources after each change
- EDID modifies HDMI audio data handshake
EDID settings can resolve HDMI audio cutoff issues.
Step 13: Replace Faulty HDMI Cables
If possible, swap out any HDMI cables connecting your devices to the LG TV. Use short, high-speed Premium HDMI cables if available.
Faulty or poor quality HDMI cables are a common cause of flickering HDMI audio. Replace suspect cables to rule out cable failure.
Getting better HDMI cables:
- Swap current HDMI cables for known working ones
- Use Premium Certified HDMI cables
- Properly rated for HDMI 2.0/2.1 if required
- Test if new cables fix audio dropout
- Can isolate faulty existing cable issues
Eliminate faulty cables as the culprit through replacement.
Step 14: Verify Digital Audio Output Formats
For issues transmitting surround sound to an external audio system, ensure the Digital Audio Out format set on your LG TV (Dolby Digital, DTS, etc) matches what your soundbar or A/V receiver supports.
Mismatched digital audio output settings between components can prevent proper multi-channel audio playback. Set formats correctly.
Digital audio format settings:
- Check audio system supported formats
- Set LG TV digital audio out to match
- Optical/HDMI ARC ports typically
- May need to enable Dolby Digital, DTS etc
- Proper format enables multi-channel surround
Match your connected audio device’s capabilities.
Step 15: Contact LG Support for Repair Options
If you’ve tried all troubleshooting steps but your LG TV still exhibits no audio, it’s time to contact LG support about service and repair options while under warranty.
Get help from the experts on determining if your LG TV requires hardware repair to resolve stubborn speaker failures or mainboard audio issues.
Contacting LG Support:
- Call LG support line or chat online
- Explain troubleshooting steps taken
- LG can diagnose hardware faults
- Arrange for qualified service/repair
- Get issues fixed under warranty
LG can help identify any parts needing repair if software fixes don’t work.
Frequently Asked Questions
Here are some common quick questions about fixing sound issues on LG TVs:
Q: Why did my LG TV audio suddenly stop working?
A: Common causes are loose connections, incorrect settings, faulty cables, TV software bugs, and hardware issues like bad speakers or mainboards.
Q: Is it difficult to fix an LG TV with no sound?
A: In most cases, sound issues can be fixed yourself following the step-by-step troubleshooting in this guide without professional help or repair needed.
Q: Do all LG TV sound problems require a service call?
A: No, user-fixable issues like settings and cabling can resolve many LG TV audio issues without requiring a technician visit. Try troubleshooting first before resorting to service.
Q: What should I do if updating LG TV firmware doesn’t restore audio?
A: Factory reset the TV after the update, recheck settings, cables, and connected devices. If issues persist, contact LG support about hardware repair options while the TV is under warranty.
Fixing sound issues on your LG TV is straightforward when you follow a systematic troubleshooting process. Running through the steps above will methodically isolate the problem so you can restore normal audio function.
Correct settings mistakes, resolve cabling problems, clear software glitches, and update firmware using this guide. And soon you’ll be enjoying great sound from your LG TV once again.
Stick with each solution in this structured sequence rather than jumping around randomly. This ensures you catch the problem early and get your LG TV’s audio working properly once more.