TV Humming? 11 Best Solutions To Fix It

Our technology, including TVs, phones, computers, and other devices, can occasionally act up or, to put it simply, grow tired. And when it starts interfering with what you are doing or viewing, it can become frustrating and exhausting.

TV Humming Sound : What It Is And How To Fix It

Your television and, in rare instances, your computer may begin to make a buzzing or droning noise. It does not imply that your TV is completely broken.

There are various fast remedies for these issues, but it does signal that something is wrong.

As opposed to the cathode ray tube displays of the past, liquid-crystal displays do not inherently hum, even faintly.

Thus the only buzzing your LCD TV should emit an excellent reaction to what’s on the screen. See the fixes below.

Causes and Solutions to TV Buzzing and TV Humming Sound

Your TV may hum for several reasons, but these problems are easy to resolve.

It is crucial to remember that there isn’t a universal fix for TV buzzing or humming problems. Therefore, it is vital to know the exact cause to provide the best remedy. We mentioned the possible causes and fixes to them below:

  1. Ground Loops
  2. Faulty Speaker
  3. CRT Scanning 
  4. Electromagnetic Interference
  5. Overmodulation
  6. Improper Backlight Setting
  7. Poor Ventilation and Temperature Changes
  8. Unstable Audio Volume 
  9. Check the audio cable and ports
  10. Faulty Cooling Fans
  11. Configure audio settings on the computer

1. Ground Loops

Due to the apparent variations in voltage between two grounding locations, ground loops develop.

The electrical potential of the wall outlets in your home may vary, albeit this variation is hardly perceptible.

Electrical ground loops that cause TV buzzing typically happen when several linked devices are put into several different wall outlets.

Electrical ground loops that cause TV buzzing

You’ll probably hear a humming noise when connecting your DVD player, subwoofer, cable box, and TV with extensions to various wall outlets.

Solution: 

Connecting your power extender to a single wall outlet at a time is one of the most straightforward solutions to eliminate hums caused by ground loops.

Consider placing an in-line ground loop suppressor between your TV and accessories if this doesn’t resolve the issue.

2. Faulty Speaker

There are internal speakers incorporated into every TV. These speakers are susceptible to damage, like any other electronic component, for various causes, such as excessive dampness or physical wear.

Internal speakers incorporated into every TV

Whichever the cause of the problem, malfunctioning speakers will always create a humming or buzzing sound that, if not appropriately rectified, might annoy you and your guests.

Solution:

By turning the volume down, you can determine if the humming noise is coming from the TV. The issue is most probably audio-related if the buzzing sound has disappeared.

turn the volume down

Connecting your TV to an auxiliary audio system will quickly fix this. Pairing to external speakers will instantly turn off the defective internal speakers and silence the buzzing noise.

Pairing to external speakers will instantly turn off the defective internal speakers

You might also consider getting your dealer’s new components to replace the defective speakers. To avoid receiving an electric shock or breaking delicate features like the screen, you must be especially cautious when unscrewing the TV.

3. CRT Scanning

Be prepared for extra buzzing and whirring noises if you cherish your vintage CRT TV.

CRT Scanning on vintage CRT TV

By skimming harmonics, the cathode ray tube in these old TVs fires particles at the screen. They make a faint humming noise while doing this.

Solution:

Since the buzzing sound made by CRT TVs is so low and nearly undetectable, there shouldn’t be a problem. That is, after all, how these older TVs operate.

The only option if you cannot tolerate these noises is to switch to an LCD TV from your previous TV.

4. Electromagnetic Interference

Most commonly, electrical interference occurs when your TV’s frequency signals are interfered with by other electrical devices at home, like computers, radios, Wireless speakers, etc.

Your TV may start to hum due to this interference, which may interfere with its operation.

Solution:

  • Remove anything from the TV that could interfere with your TV frequency, such as electronic equipment, metal objects, wireless frequency devices, etc.
Remove anything from the TV that could interfere with your TV frequency
  • Aside from that, ensure none of the auxiliary connections connected to the TV are twisted.

5. Overmodulation

A nearly universal RF modulator is present in intelligent TVs. An RF modulator is a gadget that transforms video and audio signals from accessories like cable boxes, VCR satellite receivers, and DVD players into TV transmissions.

Overmodulation results when the modulator cannot manage the signals which are too strong. Any TV programming that is playing will have distorted video and audio.

Solution:

Put an attenuator between the TV reception and the peripherals to reduce signal strength and eliminate buzzing.

Put an attenuator between the TV reception and the peripherals to reduce signal strength

Or,

A more current model can be used in place of the accessory.

6. Improper Backlight Setting

With regards to appliances and devices, settings have the power to improve or degrade your output.

Due to an incorrect lighting setting, your TV may just be making a buzzing or droning sound.

To fix this, check if the TV makes any humming noises while the backlight is nearly 100%. Even though the sound is typically quiet and low-pitched, it may become annoying if the energy converter for the backlighting malfunctions.

Solution:

You’ll need to modify the TV’s backlight setting to fix this problem. How to do it is outlined below:

  • Hit the Home key on the remote control.
Hit the Home key on the remote control
  • Visit Settings.
  • You can find Backlight Settings by clicking on Picture Settings.
You can find Backlight Settings by clicking on Picture Settings
  • The high or low arrow on the remote control is used to change the backlight setting.
The high or low arrow on the remote control is used to change the backlight setting.

It’s vital to note that certain TVs generate the buzzing noise while the backlight is at 100%, while others do so when it isn’t. The method described above will resolve the problem regardless of the last two changes.

7. Poor Ventilation and Temperature Changes

Your TV may make odd noises due to poor airflow and temperature fluctuations (not certainly buzzing).

Temperature variations are typically the cause of popping or cracking sounds.

The TV might make a popping noise as it expands or contracts slightly in response to temperature fluctuations.

Solution:

Abrupt temperature fluctuations may harm your TV.

Abrupt temperature fluctuations may harm your TV.

In light of this, you must put your TV in a space with sufficient ventilation to allow for proper ventilation.

Consider putting your TV on the wall rather than keeping it in a covered cabinet if you live somewhere with hot summers. If you choose the latter, ensure the cabinet has adequate airflow.

8. Unstable Audio Volume 

If the sound is erratic, using a digital reception or cable box with outside volume buttons may result in your TV humming.

Additionally, if the reception or cable box’s sound is louder than your TV’s, your TV can hum.

Similarly, if the volume on your reception or cable box is too loud, your TV can start to hum.

Solution:

  • To find equality, turn the volume low of your TV while gradually turning up the sound of your tv receiver or cable box.
  • The aim is to ensure neither instrument has an excessively low or high loudness. Verify that all audio wires are in the appropriate input and output lines.

9. Check the audio cable and ports.

To ensure proper operation, test the audio cord and port.

To ensure proper operation, test the audio cord and port.

Your speaker starts to buzz if the signal wire is not connected to the ground. Verify the signal input line on your device.

Solution:

Try switching to a different audio cord and port to check if the whirring noise has vanished.

10. Faulty Cooling Fans

Most large TVs have vents and cooling fans to keep them from overheating. Additionally, it aids in preserving the TV’s proper operating temperatures.

However, your TV might buzz if these fans and vents are blocked or malfunctioning.

Solution:

  • Clean the cooling vents frequently to make them explicit.
Clean the cooling vents frequently to make them explicit.
  • Additionally, ensure sufficient room around the TV to facilitate airflow.

11. Configure audio settings on the computer

Incorrect audio settings may bring on the problem. Ensure they are configured correctly by checking it out. For instance, you should turn off audio improvements to resolve the buzzing sound problem.

Solution:

  • On your laptop, launch the Control Panel.
  • Select Sound and Hardware.
Select Sound and Hardware.
  • Select sound.
Select sound.
  • Ctrl-click on your audio device in the show up pane and choose Properties.
Ctrl-click on your audio device in the showup pane.
choose Properties.
  • Eliminate all sound effects by unchecking the box on the Enhancements page next to it. Then select OK and Apply.
  • If the sound is not working, try the speaker once more.

Other Ways to Stop Your TV from Loud Humming

There are more effortless techniques to stop TV humming quickly. These consist of:

  1. Factory Reset Your TV
  2. Power Cycle Your TV

1. ​​​​Factory Reset Your TV

Resetting your TV to its default settings can also help with various problems. But be aware that a factory reset will remove all your installed apps and programs.

These are the following steps:

  • Switch on your TV.
  • Click “Home” on the standard remote that came with your TV.
  • Access factory settings.
Access factory settings.
  • Pick “Device Preferences” or “Storage and Reset” next.
Pick "Device Preferences" or "Storage and Reset" next.
  • Then select “Factory Reset.”

2. Power reset Your TV

Multiple image and audio difficulties, including the buzzing of your TV, can be resolved by power cycling your TV.

The actions to take are as follows:

  • Your TV should be turned off and unplugged from the wall outlet.
Your TV should be turned off and unplugged from the wall outlet.
  • To drain any remaining power, press and hold the power button for 30 to 60 seconds.
press and hold the power button for 30 to 60 seconds.
  • Replug the television.
  • Switch on your TV and listen for any strange noises.

Final Thoughts

You may stop your TV’s annoying humming and buzzing using the straightforward fixes we provided above.

If none of those above fixes work, take the TV to a repairer or contact the TV manufacturer’s customer support.

FAQs

What Causes Speaker Vibration?

Magnetism attracts when magnetic forces are in opposition to one another. The diaphragm is pulled inward by the coil as a result. The ring will travel up and down swiftly if the energy flowing through it is alternated. The air pressure changes as a result of the diaphragm moving as a result.

How To Stop Tv Humming?

Your TV should be turned off and unplugged from the wall outlet.
To drain any remaining power, hold the power button for 30 secs.
Replug the television.
Start your TV and listen to any strange noises.

How Do You Fix A Vibrating TV Sound?

There are a lot of solutions to this issue. Before all, try power cycle it. 
Your TV should be turned off and unplugged from the wall outlet.
To drain any remaining power, press and hold the power button for 30 to 60 seconds.
Replug the television.
Switch on your TV and listen for any strange noises.

Why Does My Tv Make A Humming Noise?

Speaker malfunction, overmodulation, ground loops, or CRT scanning are all potential causes of TV humming. You can make your TV quieter by power cycling it, unplugging all cords, pausing for two minutes, and then re-joining them.