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Common Reasons Why Your TV is making a Crackling sound and How To Fix It

• Temperature Changes

If you are hearing crackling or popping sounds from your TV, don’t worry manufacturers would always assure you that it is not a malfunction. Apart from any other serious internal hardware problem, more often than not, it’s just a normal occurrence.

The crackling occurs when some internal parts contract or expand due to changes in temperature. You can commonly hear it when the TV is turned on or off. It even becomes louder or quieter depending on environmental changes namely heat, cold, and humidity. It is no cause for worry unless it becomes consistent or abnormally loud.

• Devices Connected to Your TV May Also Cause Crackling

These noises may also happen when you are changing channels using a cable box. Or, it may be heard when fast-forwarding a satellite recording. If the noise occurs only when using the cable box, then the set-top box could be the issue. In addition to that, if there is no noise when using the built-in tuner of your TV, or when changing video inputs, it’s not your TV.

Again it could be the set-top box or its settings.

Fix:

Some set-top boxes let the user choose his preferred output setting. You can try changing the settings this way:

  • Video output- 1080i
  • Audio output- LPCM, PCM, or stereo
  • 4 by 3 Override- Turned off

Reboot your set-top box after executing the suggested settings. If the problem persists, you can contact the manufacturer for further troubleshooting tips.

• Faulty HDMI Cables

Take the remote control and press the SOURCE button. Change channels to check if the sound is coming off of a broadcast issue. Press the SOURCE button again to the change origin of programming. If the noise disappears it must be one of the cables or a connected device that is causing the problem.

Possible cable/device issues:

Cables that may be loose or improperly connected

• Defective device

A device that may be broken that is connected to the TV, like for example a game console, DVD player, and many other things.

Fix:

Manually check the audio/video cables at the back of the TV. Improperly attached cables, or when connected to the wrong port may very likely cause audio problems or worse no sound at all. That goes for any device that may be attached to the TV.

Try to change the source and change the channel as well. If the problem goes away when you are not using that device that is connected to the TV, then it is possible that the device may have the problem. You should have that device checked or replaced.

If and when the noise still occurs after changing the source, it could possibly be the TV itself. A repair of the TV may be needed, be sure to have it checked by your trusted tech.

• Self Diagnostic Tool

If your TV was manufactured sometime after the year 2009, a Self Diagnostic function on the TV itself has become a standard. This is to automatically troubleshoot the problem. Check out the menu screen of your TV and that tool should be found in the support section.

If the diagnostic tool, after conducting internal tests inside the TV, concludes that there’s nothing wrong with the internal speakers. The problem could be the cables or an external device.

Fix:

Replace the cable or have that external device checked or replaced.

How Much Does It Cost Nowadays to Have Your TV Repaired?

As of the present, having your TV repaired will have you shell out at least $60 to $350. On average, owners would spend $207 for repairs on LED, LCD, 4K TVs, and Plasma. This is about the price range you need to pay for sound issues, assuming that it is a hardware problem. This pricing includes parts and labor costs. Please check out our How much does it cost to have your TV repaired article for further details.

Related:

FAQ:

How to Stop My Samsung TV Popping

The popping sometimes occurs when you turn off or turn on the TV. If it doesn’t happen often, it is likely normal because of temperature changes which can cause the plastic and metal parts of your TV to change in size.

You can minimize the popping by doing the steps below:

Fix:

  • Make sure that your TV is well ventilated, or better yet, enhance ventilation by strategically positioning your TV where it could not accumulate heat and humidity. See the user manual.
  • Protect your TV set from other appliances that expel heat and not have it directly pointed at the TV. Avoid this.
  • Make sure that your TV is standing on a flat level surface as a tilted stance can cause an increase in the popping noises.

How to Stop My Lg TV Popping (Recommended steps)

As with most TV sets, a crackling sound on your Lg TV could mean that there is an issue with the external device or it could be a blown speaker.

Fix:

  • Check the cable that is used to connect to the media device. If found defective, replace.
  • Check the audio output settings of the media device, if it still doesn’t work, have the device checked at your nearest electronic repair store.
  • Turn off devices that are near the speaker which might be close enough for it to cause an EMI interference.
  • Does it get any louder when the volume is increased? And do you hear it on all channels and inputs?
  • If no, the noise might just be caused by the speaker cabinet due to changing temperatures.
  • If yes to both questions, the noise could be caused by vibration due to high volume or loud bass. If you hear the noise whenever abnormally loud commercials or action scenes come on, activate the auto-volume feature from the audio features menu.
  • If the issue continues contact LG customer support.

Guide Questions for LG TV

Do you hear the noise when watching Live TV?

  • Tune in to the HD channels to check if it’s noisy there. If the noise is not present in other channels then the noise is coming from the broadcast on live TV.
  • If you suspect that an external device that is connected to your tv is the culprit. Try to hook up another working device on the same port. If it works well without the noise, it could either be the cable or the external device itself. Replace whenever needed.

How to Stop Roku Stick from Making Popping Noise

This is for the Roku model 4630X in particular. The problem occurs on both the TV speakers and remote ones. It seems like the problem occurs consistently at the same place in a movie. Later other apps began to be affected like Netflix, Hulu, and Amazon.

Fix:

  • Check HDMI cords and test with another HDMI cable to rule out problems with cords.
  • Try remote speakers
  • If the issue persists try this:
  • Turn off the volume leveling feature while on playback. This should solve the problem.
  • If by some rare chance that the issue persists, contact Roku.