How to Self-Diagnosis your LG Smart TV

How to Run a Self Diagnosis Test on LG Smart TV

At times, problems on the LG TV might affect your streaming experience in an unexpected situation. Fortunately, LG TV models (2018 and above) running webOS 4.0, 4.5, 5.0, and up have a dedicated Self Diagnosis feature which helps to identify the issue and fix it on its own.

Moreover, it helps users to find if the audio and video quality of the TV is working well. Henceforth, you can run a self-diagnosis test on your LG TV which lets you know the root cause of the error and fix it right away.

What is the Use of Self-Diagnosis Test on LG TV

LG Smart diagnosis is a unique feature to help you solve minor issues if anything occurred on your TV. Here are the benefits that you will get by taking this test.

  • You can easily find if the video signal fed to the screen was corrupted.
  • Running this test not only gives the results but also provides additional information about your LG product.
  • Using this advanced technology you will get instant answers to your troubles. Thus, it saves you money and time for contacting professionals.
  • You don’t need to call LG Support for simple issues, you can do it yourself.

How to Run Screen Self-Diagnosis on LG Smart TV [Older Model]

1. Turn on your LG Smart TV without a remote using the physical power button.

2. Press Settings using the LG TV remote and click on All Settings.

3. Choose Support from the list of options and click on OLED Care.

Self diagnosis on LG TV - Click support

4. Click Device Self Care and select Screen Self-diagnosis.

Self diagnosis on LG TV - Screen Self Diagnosis

5. You will see an image and a Check box displayed on your TV screen.

6. If the image is clear, click Yes on the Checkbox. Or if the image is distorted or blurred click No.

Self diagnosis on LG TV - Picture test

Note: If you cannot see the image clearly or couldn’t analyze the issue, it is better to contact LG Support Center for further assistance.

How to Run Sound Self-Diagnosis on LG Smart TV

1. Press Settings on your TV remote and select All Settings.

2. Click Support and select OLED Care from the list of options.

Sound Self Diagnosis
Select OLED Care

3. Select Device Self-Care and choose Sound Self-Diagnosis.

4. An audio file will be played combined with a Check box.

5. Click Yes in the check box if you hear an issue-free sound or No if you hear a choppy or shattered sound.

If you hear the audio with choppy or shattered sound, check whether there is any loose cabling on the connected external device.

How to Run Self-Diagnosis Test on LG Smart TV [Latest Model]

1. Press the Settings button on your LG Magic remote.

2. Click on All Settings and choose Picture or Sound based on the test you are going to undertake.

3. Choose Picture Test or Sound Test from the list of options.

Click on Picture test

4. If you undergo Picture Test an image will be displayed, if it is Sound Test an audio file will be played.

5. On both test you will be presented with a Checkbox, if your TV pass the test click Yes, or if your notice anything abnormal click No.


How to change the Picture mode on LG TV?

Using the remote, go to Settings > All Settings > Picture mode > Change the mode. This way you can change the picture mode on LG TV.

How to fix it if LG TV has no sound?

If there is no sound on LG TV, it may be due to some reasons. To fix this issue, change the audio output to the TV speaker, switch the input, and check the TV cord and external connections.

Amelia Griffiths

Greetings! I am Amelia Griffiths, a tech head and a content writer who loves to write about household gadgets. I remember my brother’s awe-struck face when we switched from our old LG TV to a new smart LG TV back when the first model was released. We now use one of the latest versions, and I am quite well-versed in the technical aspects of it. This blog (LG TV Guru) is my space to share and talk about different settings and unique features of LG TV. The how-to guides, with their easy-to-follow steps, will guide you through the process. I have also included the troubleshooting methods I have done and the techniques I know will help you get the complete television experience.

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