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Fixing LG TV Keeps Making A Humming Noise Issue

LG TV humming noise annoyed granny

Does your LG TV keeps making a humming noise?  The overlapping of dialogues can be annoying when you are watching your favorite TV shows. It doesn’t have to be a constant problem.

LG TV hosts a range of channels and apps that you can enjoy every weekend. LG devices are primarily free of faults, but if you hear a humming sound, you can fix it on your own. Despite these minor issues, TVs from LG offer a great viewing experience for children and adults alike. 

If LG TV keeps making a humming noise, it is not a huge problem. You can fix the humming noise by adjusting the settings of your LG TV. We have got the information you need to resolve the issue of the humming noise on your LG TV.

Why Does LG TV Keeps Making A Humming Noise?

LG TV humming noise

There are many reasons LG TV keeps making a humming noise; sometimes, LG TVs start rebooting out of nowhere. To check the overall performance of your TV, you need to check all aspects. It may sound tedious, but the flaws in the design and functioning of LG TV are minor and can be fixed easily. Here is a list of all the potential problems you might be facing.

Brightness Levels Could Be High

When the brightness levels are too high, LG TV starts making a humming noise. You can change the brightness levels on your LG TV by following the given steps:

  1. Press the “Smart” button on your remote.
  2. Go to “Settings”
  3. Click on the “Picture” tab.
  4. Go to “Picture Mode”
  5. Scroll down to the “Brightness” settings.
  6. Change the brightness settings until the humming noise stops.

Make sure you check all the levels of brightness. Keep your television on “mute” as you change the settings. Once you reach the optimum brightness level and the humming noise stops, you have fixed your LG TV.

If it doesn’t work, your speakers might have a problem.

Loud Volume Settings Can Damage Speakers 

If you are used to listening to your TV at a high volume, it might cause a humming sound in the speakers. Turn down the volume and listen for the humming noise. If the humming noise disappears, it means that you need to use a lower volume setting on your LG TV.

Faulty Speakers From Excessive Usage 

If LG TV keeps making a humming noise, the noise stops as soon as you put it on mute. It means that there is a problem with the speakers. Call LG customer service and see if you can fix the problem on your own. If not, take your LG TV  to the nearest service centre and fix it.

Repeated Overheating Damages Fans

The cooling fans in LG TV get damaged after some time. If you have overused your LG TV or placed it in a cramped corner, the fan would have to run overtime. If you can replace the fan on your own, then get a new one from an LG TV store. Therefore, you should take your TV to the nearest customer service centre and get the fan fixed. 

Your TV Could Be Malfunctioning

If you have joust bought a brand new LG TV and it makes a humming noise, you might have a malfunctioning model. The LG TV LM620T range was diagnosed with a humming problem in 2012. If you were not aware of the situation, you need to replace your TV with another one.

Maybe your TV mounted  close to the wall

LG TV makes humming fix

When an LG TV is placed too close to the wall, it makes a humming noise. When LG TV becomes overheated because of poor ventilation, it produces humming noise. Make sure you have at least 10 centimetres between the wall and the back of the TV to allow proper air circulation. There are a few ways in which you can fix this problem.

  • If your LG TV is mounted, you might need to fix the screws at the back. Loosen the screws a little to allow space between the wall and the LG TV.
  • To create space, you can place the LG TV on a small table or shelf and move it a few inches away from the wall. 
  • Place the LG TV in a cool spot to ensure it doesn’t overheat. 
  • Amp up the air conditioning to keep the area cool.  

Once you have maintained a proper distance between the wall and LG TV, turn it on to check whether the humming sound has stopped or not. If the problem isn’t resolved, try the next solution.   

Damage to Audio ICs Lead to Distortion

The humming noise on LG TV can be caused by distorted audio. Sometimes the sound settings can be mismatched, or a high sound setting can damage the audio system. If you have lowered your LG TV volume and still have the humming sound, try to fix it by troubleshooting your LG TV.  Troubleshoot the audio to resolve the issue of the audio distortion. Follow the given steps to fix the problem:

  1. The first step is to carry out a good test.
  2. Click on “settings” on your remote control. 
  3. Go to “All Settings”.
  4. Select ” Sound” in All settings.
  5. Click on “Sound Test”
  6. When the sound test starts, listen carefully. 
  7. Click on “yes” to finish the sound test if you can hear the sound.

Check to see if you still hear the humming sound. If you don’t hear humming anymore, your problem is solved. 

If you have any audio problems, you can “Schedule A Repair” by visiting the support page on LG TV. 

On the other hand, if you can hear the sound clearly and the humming noise is still audible, the problem might not be in the audio settings. 


LG TV making a humming sound is a common problem. It doesn’t mean that you should panic. Just try the steps we have outlined for you, and you will have fixed the humming sound issue in no time. Remember that LG TV is a sophisticated machine and must be handled properly. Contact LG TV support to get a permanent fix if you still face the same problem after trying all the solutions we have provided.