At a Glance
If sound issues occur while watching TV, this can be caused by an unstable broadcast signal, a connection issue with the external device, or in rare cases a failure with the TV.
[LG WebOS TVs] How to Use Sound Self Diagnosis On Your LG TV - WebOS 22
Go to All Settings.
Under Support select OLED Care and then device self-care to optimize your TV.
Now select sound self-diagnosis to perform a sound test.
Follow the instructions to see if your TV has any audio problems.
If the issues persist contact LG support for more help.
Try This
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Are you using the internal TV speakers or an external sound system?
Internal TV speaker External Sound System -
Select Your WebOS Version
WebOS 24 WebOS 23 / Web OS 22 WebOS 6.0 / WebOS 5.0 WebOS 4.5 or OLDER How to find out? -
Please see our LG TV - No Audio from External Sound System article for further assistance.
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Identifying the WebOS Version:
1 Press the
Mute] button on the TV remote 3 times repeatedly.
2Platform will help you identify the WebsOS version.
Select Your WebOS Version
WebOS 24 WebOS 23 / Web OS 22 WebOS 6.0 / WebOS 5.0 WebOS 4.5 or OLDER -
WebOS 4.5 or OLDER
Press the settings button
on the remote control ➔ [All Settings] ➔ [Sound] ➔ [Sound Test].
Can you clearly hear the test sound play through the internal TV Speakers?
Yes No -
WebOS 6.0 / WebOS 5.0
Press the settings button
Can you clearly hear the test sound play through the internal TV Speakers?
Yes No -
WebOS 23 / WebOS 22
1 Turn on the TV and press the
2Select [Gear Icon] to open the Settings menu.
3Select [General].
4Select [OLED Care] [Device Self Care] then [Sound Self-diagnosis] and follow the on screen prompts.
Can you clearly hear the test sound play through the internal TV Speakers?
Yes No -
WebOS 24
1 Turn on the TV and press the
2Select [Gear Icon] to open the Settings menu.
3Select [Support].
4Then select [Sound Self-diagnosis] and follow the on screen prompts.
Can you clearly hear the test sound play through the internal TV Speakers?
Yes No -
Able to hear the test sound in the interal TV speaker
Lets check the cnnection to the device
5Power off the TV.
6If you are using an external device to display conent on your TV, power it off as well, disconnect the HDMI cable of the connected device and from the LG TV for 3 seconds then reconnect it.
7Power the TV back on and start the video source again.
Is the sound working properly now from the video source?
Yes No -
Can not hear the test sound in the interal TV speaker
Service will be required for a proper diagnosis.
Please reach out to our 24/7 Chat Support for further assistance.
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Sound Works!
Awesome! The problem may have been caused by a bad connection.
If the problem returns, reach out to our 24/7 Chat Support for further assistance
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No sound
Lets perform an A/V Reset
Note- The AV reset refreshes the picture and sound settings to the out-the box- factory defualts.
- The details of the AV Reset menu may vary depending on the model.
1Exit all internal apps and menus of the TV.
2 Press the
3Select [AV Reset] to initialize the picture and sound settings.
Did this resolve your sound issue?
Yes No -
Issue Resolved!
Awesome! There may have been an issue with the settings causing the issue.
If the problem returns, reach out to our 24/7 Chat Support for further assistance.
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Issue not Resolved
Service will be required for a proper diagnosis. Please reach out to our 24/7 Chat Support for further assistance.
