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Noise Issues

  • Troubleshooting - Noise
  • Clicking/Knocking/Popping/Buzzing
  • Troubleshooting
  • Last Updated 01/08/2012
TV- Humming/Buzzing Noise


Some types of noises are normal in an LCD, LED, and/or Plasma Television. You will need to determine the type of noise to properly troubleshoot the issue.

Determine where the noise is coming from

First set the television's volume to "0".

Is the humming/buzzing noise coming from inside the TV?

If so, it is normal for the TV to produce a humming noise when the cooling fan is running. The nosie of the fan should not interfere with the audio of the TV.

Is the humming/buzzing noise overpowering the TV audio?

After increasing the TV volume to a setting between 30-50, listen to the humming/buzzing noise again.

If it is overpowering the televisions audio, the unit may require service.

If not, it is normal for the TV to produce a humming noise when the cooling fan is running and should not interfere with the audio of the TV.

Note: The cabinet may vibrate if the volume level is set too high.

It is recommended that the TV volume be set to a moderate level. If the cabinet is constantly vibrating at a moderate volume setting, it may require service. A service bulletin was issued for some models to correct a cabinet vibration issue. Check for available service bulletins based on the model number. If there is no service bulletin listed for the model, but it still vibrates all the time, it still may require service.

The volume level may be fluctuating and causing the device to experience higher volume levels during commercials or background noises. Try to activate the Auto Volume feature if the device has one. This is located in the Audio menu of the television. Strong bass or background noises could cause a slight vibration in the cabinet. This is normal at higher volume levels.

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