Finding out why the “LG TV no sound” problem suddenly occurs can be overwhelming, especially when you have guests at home. Although the problem is not uncommon, almost all LG users report it, any non-technical guy can run into the problem.
If you fall into this category and want an easy solution where you don’t have to go to the root of the situation to fix it, you do it and the sound gets fixed and appears, this is the right place for the same!
This article will help you determine why there is no sound on your LG TV and basic fixes that can be bypassed for quick results.
Let’s first look at the causes that might be causing the problem.
What Causes Sound Problems on LG TV?
There may be no sound on your LG TV due to problems with the HDMI cable, HDMI port, RCA jack, or TV audio settings. If there is no sound on any TV channel, this may be due to the TV sound settings, firmware errors, connection problems or volume settings.
- LG TV HDMI Audio/Sound not working
- Free HDMI cable
- Legacy version of LG TV
- External device output
- Bad HDMI cable
- Faulty HDMI port
- Volume off or too low
In addition, there are other reasons.
- LG TV HDMI Audio/Sound not working
The sound may not work due to the HDMI cable or devices connected to the HDMI cable. As long as the TV sound is OK, other input channels and live TV will work.
- Free HDMI cable
Another common reason for no sound on an LG TV is that the HDMI cable is loose. It can be loosened either on the side of the TV or on the side of the external device. In this case, try either wiggling the cable or pushing it in as far as it will go.
- Legacy version of LG TV
It could even be a firmware bug causing no sound. LG is constantly releasing new updates, so you should consider updating your TV and external devices connected to the TV.
If this still doesn’t fix the problem, it could be a new bug that LG probably doesn’t know about. You should contact their support team and let them know.
For example, some people found that the sound stopped working using the built-in Netflix app. LG recommended exiting the app properly using Exit App, but after some people found the issue persisted, they released an update to fix it.
- External device output
This occurs when the settings on the external device prevent sound from being played. It’s mostly for computers. Check if your LG TV is selected in the sound output settings on your computer.
You may need to contact your computer manufacturer about the error if you don’t see it.
To test this on macOS, follow these steps.
- Go to the Apple menu.
- Select Sound settings.
- Click Sound.
- Find a conclusion.
To check this on Windows, follow these steps.
- Go to the start menu.
- Find Control Panel.
- Select Sounds.
- Select Playback.
- Bad HDMI cable
The HDMI cable may be defective. You can use the same cable on another TV to test. If it doesn’t work, then the cable itself is faulty.
HDMI cables can usually be found for less than $20. If you place an external device next to the TV, you can buy a 6-foot HDMI cable.
- Faulty HDMI port
If you think the HDMI cable is OK, try connecting the cable to a different HDMI port on your TV. If it works now, that means the HDMI port was bad.
In this case, the HDMI port will require either a repair, which costs $100 to $300, or a replacement, which costs $200 to $350.
- Volume off or too low
The TV sound may be muted or too low. Make sure it’s above 10. This is an easy fix.
How to fix sound problem on LG TV?
Now that you know what causes audio problems on LG TV, let’s look at some fixes to solve the same.
- Check if your LG TV is muted
- Adjusting the sound settings of your LG TV
- Try another HDMI ARC cable or optical cable
- Switch HDMI port
- Check connected TV/cable box
- Update the software on your LG TV
- Factory Reset LG TV
- Reset LG TV without remote control
- Reinstall the power cord on the back of your LG TV
- Check connected headset
- Check your LG TV warranty.
- Contact LG TV Support
Here is a detailed explanation of each below.
1. Check if your LG TV is muted.
While watching, you may have accidentally pressed the mute button on your LG TV remote. Happens. Or your pet may have done it by mistake. Or maybe even the remote isn’t working properly, which is why sending random signals to the TV caused it to mute itself. In all these situations, there will be no sound on your LG TV.
However, grab the LG remote, turn up the volume, and make sure it’s not muted.
2. Adjust the sound settings of your LG TV.
You can adjust your audio settings in just four steps. Trying each of the four combinations is sure to fix audio issues on your LG TV.
- Disable smart sound mode
First, you must turn off the Smart Sound mode on your LG TV. To do this, follow these steps.
- Open the settings on your TV by pressing the Theme/Smart button on your TV remote.
- Go to the Sound tab.
- Toggle the Smart Sound mode and turn it off.
- Switching digital audio from automatic to PCM
Many have solved this problem by changing the audio settings from Auto to PCM.
You need to follow the steps below to make changes.
- Go to settings.
- Find all settings.
- Click Sound.
- On the audio settings page, click “Sound output”.
- Find Optical and set Digital Sound Out to PCM.
- Do not turn off LG Sound Sync.
Your LG TV sound should now start working.
- Disable Dolby Atmos
Digital Optical will not support Dolby Atmos as it cannot transmit Dolby Digital Plus and Dolby True HD audio codecs.
Therefore, Dolby Atmos should be disabled using the digital optical option as shown in the previous step. Disabling it is simple. Just follow these steps.
- Find Settings.
- Go to the “Sound”option.
- Find Dolby Atmos and turn it off.
- Toggle audio output options
Various audio output options are available on the LG TV, including the TV’s built-in speaker, HDMI Arc, optical, and even a Bluetooth device.
Try switching between the options to fix the sound issue on your LG TV.
- TV internal speaker
- Arc HDMI
- TV internal speaker + optical
- optic
If you are not using Internal TV Speaking, connect a working optical digital audio cable or an HDMI cable, depending on the option selected.
3. Try a different HDMI arc or optical cable
You can use an HDMI cable or an optical digital audio cable to connect an external device to your LG TV.
If the LG TV is connected to a soundbar or A/V receiver with HDMI and HDMI Arc is selected in the Sound Out settings, then the LG Smart TV probably cannot transmit sound through the HDMI Arc due to it (cable) being faulty.
In this case, the cable may need to be replaced.
The same goes for optical audio cables.
4. Switch the HDMI port
Sometimes, when the LG TV does not play audio through HDMI Arc, the problem may be with the port and not with the cable.
So, you can try connecting HDMI to a different port.
Also, make sure it’s installed properly and isn’t wobbly.
5. Check connected TV/cable box
If you have a cable TV/set-top box such as a Roku, Amazon Fire TV, or game console connected, the audio issue may be related to the set-top box and not the TV.
It would be helpful if you did the following checks on it:
- Make sure it’s not disconnected from the box itself.
- Make sure the volume is high.
- Check your sound/audio settings and switch to whether you are using HDMI or PCM (optical).
6. Update the software on your LG TV.
Outdated software can also be the cause of no sound on this LG TV. In this case, you need to update the software to the latest firmware version.
Follow these instructions to check for updates and install them.
- Press the Home or Settings button on the remote control.
- After clicking on the “Settings”icon in the upper right corner, click “All Settings”in the lower right corner.
- Go to the General tab, scroll down, find About This TV and click on it.
- The current software version of the TV will be visible; click “Check for Updates”.
- If an update is available, download and install it.
- After installing the update, the TV will automatically restart.
- Your LG TV sound should now work.
If you run into problems updating your software, here’s how to fix them using the manual update method.
- Visit the LG Software and Driver Support Page.
- Please find the model number of your device and select it from the list.
- Insert the USB flash drive into the PC and create a folder named LG_DTV in the drive’s folder.
- Download the latest software zip file to your computer.
- Once downloaded, open and extract the zip file to the LG DTV folder on your USB stick.
- Remove the USB drive from the PC and insert it into the TV’s USB port.
The folder must be named exactly as we said so that you can find it on your USB drive.
- The TV will display Ready for USB update if it has been named accordingly. Click “Install”to install it.
- After installation, turn off the TV for a few seconds and then turn it back on to complete the update.
7. Factory Reset Your LG TV
A factory reset will return your TV to its factory default settings. Also known as a hard reset, it will change any audio settings on your TV that you have made on your end.
Follow the steps below to factory reset your LG TV.
- Go to settings.
- Find all settings.
- Select General.
- Scroll down and click “Restore original settings”.
- Confirm and reset.
- Select all reset options and continue.
The TV sound should now work.
8. Factory reset LG TV without remote control
To do the above, you will need an LG TV remote control. What to do if you lost it? In such a situation, follow the steps below and reset the TV without a remote control.
- Press the Home or Z button on the side of the TV.
- To go to the main ones, press the volume or channel up.
- Select Reset Defaults.
- If you have set a password, it may ask you for it.
9. Reset the power cord at the back of the TV.
To reset the power cord on the back of the TV, follow these steps:
- Unplug the TV from the mains at the main checkpoint.
- Press and hold the power button on the TV for a few seconds.
- Leave the TV unplugged for a few minutes.
- Reconnect the TV and turn it on using the power button on the TV, not on the remote control.
10. Check if a headset is connected
This is mainly for gamers who use connected headsets to improve their gaming experience. If you’re still not hearing sound, try checking your headset port for debris.
The problem may be that your headset is not transmitting sound to you. If so, do nothing with your TV and get new headsets.
11. Check your LG TV warranty.
You may need to check your TV’s warranty if you’ve tried all of the above and still no sound.
12. Contact LG TV support
If you still can’t get sound out of your TV, contact LG TV support to check it.
Conclusion
So here you go. Thus, there are many reasons why the sound may not be coming from your LG TV. It would be helpful if you tried all the above solutions to get your TV sound working.
If you have any doubts about the lack of sound on your LG TV, please contact us through your comments.
Frequently Asked Questions (FAQ)
Why is there no sound on my LG TV?
There can be many reasons why there is no sound on an LG TV, and there can be many of them, and they are all detailed above.
How do I get sound back on my LG TV?
The audio output must be set to “Internal TV speakers + audio out (optical)”or “Internal TV speaker”.
What is the “Sound Out”option on LG TV?
Select “Audio Out”and select the “Use TV Speaker”option. This will program the TV to connect audio through the internal speakers and transmit through the external speakers.