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LG TV Noises Coming from TV not Speakers

  • Troubleshooting - Noise
  • Clicking, Knocking, Popping, Buzzing, or Other Noise
  • Troubleshooting
  • TVs
  • Last Updated 03/10/2014
LG TV Noises Coming from TV not Speakers
LG TV Noises Coming from TV not Speakers

The TV can emit low volume sound from the power supply, which should be imperceptible to the listener when viewing normal programming. When other irregular noises are heard, check for electrical interference. In some cases, the volume control should be reset to alleviate cabinet vibration.
Humming Noise
Electrical Noise
Cabinet Vibration

Humming Noise

Humming noises are usually emitted from the power supply area and normally cannot be heard at normal listening volume. Some TV models have cooling fans, and these may be heard at very low volumes. If the fan noise is obtrusive, then the TV may require service.

If the humming noise can still be heard at normal volumes, then check the Cabinet Vibration section

Electrical Noise

Noises due to electrical interference can be caused by electrical products located near the TV such as:
  • Cordless telephones
  • Network hardware
  • Computers/Laptops
  • Cell phones
Ensure that none of these items are in close proximity to the TV. If the electrical interference remains, then the TV may require service.

Cabinet Vibration

Cabinet vibrations are usually caused by the TV speakers set at a high volume.

1. If the television cabinet vibrates constantly and the volume is set to a moderate level, then the TV may require service. However if this vibration occurs when the volume level is fluctuating due to different channels or commercials, then activate the Auto Volume feature. Press the SMART button Smart Button on the remote control and select Settings > SOUND > Volume Mode, then press Wheel or Enter.

Volume Mode

2. Select Auto Volume On
AUto Volume Menu

Strong bass or high volume could cause slight vibration in the cabinet. This is normal at higher volume levels.

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