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LG TV Audio Problems

  • Troubleshooting - Audio
  • No Audio
  • Troubleshooting
  • TVs
  • Last Updated 03/10/2014
LG TV Audio Problems
LG TV Audio Problems

Most audio problems are caused by incorrect menu settings on the TV or external devices. Performing a Sound Test will either confirm or eliminate the TV as the source of the problem. Subsequent sections will help to determine the audio problem when an external device is attached to the TV.
Sound Test
Distorted Audio
Low Audio
No Audio


Sound Test

Performing a simple Sound Test reveals potential audio problems with the TV speakers or audio circuitry.

1. Press the Smart button Remote on the remote control and select Settings > SUPPORT> Sound Test, then press WHEEL or ENTER.

  Sound Test

2. The Sound Test generates audio output to the TV. Based on what sound is heard, answer the question on the menu and follow the instructions.

Sound Test OK Sound Test Yes
   
If No is selected, then the following message will appear: If Yes is selected, then the following message will appear:
No Error Error Message

3. If the Sound Test revealed no TV sound problem, then refer to the sections on external sound sources.

Note: If the sound is only distorted when in an application, then contact the vendor of that application.

Distorted Audio

Distorted audio can be caused by faulty audio circuitry in either the TV or external audio systems. Another likely cause of audio distortion is the external device.

1. If you are using an external sound system such as a Home Theater etc, then check that the TV Speaker is Off. If you are using the TV speaker, then jump to Step 4.

2. Press the Smart button Remote on the remote control and select Settings > SOUND> Sound Out, then press WHEEL or ENTER.

3. Select the appropriate External Speaker option.

  Sound Out Menu

4. If the audio distortion is still present and on a single OTA (Over The Air) channel or from a single device, then the TV is the unlikely cause. If the audio distortion is on all channels or from multiple devices, then proceed to the next step.

5. Verify the other Sound menu settings. Press the Smart button Remote on the remote control and select Settings > SOUND, then press WHEEL or ENTER.

  Sound Menu

  • Sound Mode - Standard
  • Virtual Surround Plus - Off
  • Clear Voice II - Off
  • Volume Mode (Auto Volume) - Off
  • Sound Option Setting (Balance) - Center
  • Sound Option Setting (Sound Optimizer) - Normal

6. If the audio distortion is still present, then the TV is may require service.


Low Audio

Low audio can be caused by a low level incoming audio stream, or by incorrect menu settings on the TV.

1. If you have an external sound source attached:
  • Check if the connecting cable is secure.
  • Check if the external device volume control is set to the correct level.
2. If the audio level varies between channels, then you may need the Auto Volume set to ON. To set this, press the Smart button Remote on the remote control and select Settings > SOUND> Volume Mode, then press WHEEL or ENTER.

  Volume Mode

3. Select Auto Volume to ON.

  Auto Volume
No Audio

Refer to the specific audio input and output scenarios to identify why no audio is heard on either the TV speakers or the external device speakers.

Input: Application, TV Tuner, or game on the TV
Output: TV Speakers
  1. Check if the TV Sound Out  is set to TV Speaker.
  2. Check if the volume is set to the correct level and not muted.
  3. Check an alternative internal source. If no audio is present, then the TV may require service.

Input: Application, TV Tuner, or game on the TV
Output: External Speakers
  1. Check if the TV Sound Out is set to External speaker.
  2. Check if the external sound system is switched on.
  3. Check if the audio connector is secure at both the TV and the external sound system.
  4. Check if the external sound system is switched to the correct input.
  5. Check if the external sound system is set to the correct volume and not muted.
  6. Check an alternative external source with the sound system, such as a Blu-ray player, DVD or Gaming Console. If there is still no sound, then the external sound system is likely to be faulty. If there is sound, then proceed to the next step.
  7. Check an alternative internal source. If no audio is present, then the TV may require service.

Input: External Source (e.g. cable box, DVD player)
Output: TV Speakers
  1. Check if the TV Sound Out  is set to TV Speaker.
  2. Check if the correct input is selected on the TV.
  3. Check if the external source is switched on.
  4. Check if the audio connector is secure at both the external source and the TV.
  5. Check if the TV volume is set to the correct level and not muted.
  6. If the external source, such as a cable or satellite box has a volume control, check if the setting is muted or set at a low volume.
  7. If possible test with an alternative external sound source, such as a Blu-ray player, DVD or Gaming Console. If no audio is present, then the TV may require service.

Input: External Source (e.g. cable box, DVD player)
Output: External Speakers
  1. Check if the TV Sound Out is set to External speaker.
  2. Check if the correct input is selected on the TV.
  3. Check if the external source is switched on.
  4. Check if the external sound system is switched on.
  5. Check if the audio connector is secure at both the external source and the TV.
  6. Check if the audio connector is secure at both the TV and the external sound system.
  7. If the external source, such as a cable or satellite box, has a volume control, check if the setting is muted or set at a low volume.
  8. Check if the external sound system is switched to the correct input.
  9. Check if the external sound system is set to the correct volume and not muted.
  10. If possible test with an alternative external sound source, such as a Blu-ray player, DVD or Gaming Console. If audio is present, then your previous external sound source is faulty. If there is no sound, then proceed to the next step.
  11. Check an alternative external source with the sound system. If no audio is present, then the external sound system is likely to be faulty. If there is sound, then proceed to the next step.
  12. Check with an internal source on the TV, such as a Premium Application. If no audio is present, then the TV may require service.
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