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Troubleshooting Dark or Dim Picture - TV

Troubleshooting Commercial TVs, Healthcare TVs, Hospitality TVs, TV Audio Video Accessories, TVs Last Updated 07/19/2016
Troubleshooting Dark or Dim Picture - TV

Resolving Dark or Dim picture is usually just a matter of adjusting settings. It's important to remember that picture quality is subjective, it all depends on your individual preferences, and that LG TVs continue to win awards for outstanding picture quality when compared to other brands.

In short, rest assured that you chose a great TV, now let's see if we can get the settings how you want them.


The Picture Test option will display a test image on the TV, and you will decide if it is displayed correctly. To access the Picture Test:

Press the Home/Smart  button on your remote, then click the Settings icon in the top-right.

picture test image
picture test image

Access the Picture menu, then click Picture Test.

A test image will be displayed; note whether it is dark/dim, then proceed to the Troubleshooting section.

picture test image
  1. Is the image dark/dim during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
  2. The Picture Test runs with optimized picture settings. If the image was still dark/dim, try the following:

    • Set the Backlight and Brightness to high values, such as 100. Access the backlight/brightness settings from the Picture Mode Settings.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. and see if the picture improves.
    • If the issue persists, Contact Us.
  3. The Picture Test runs with optimized picture settings. If the image was not dark/dim during the test, your picture settings are likely the cause. Try the following:

    • Navigate to Settings > Picture.
    • Use the Picture Wizard feature for the easiest, most reliable way of configuring your Picture Settings.
    • Make sure Smart Picture Mode is set to Off.
    • Try some of the pre-set Picture Modes, such as Vivid, Cinema, or Game.
    • If none of the pre-set modes provide a desirable picture, try to adjust the Energy Saving mode. Setting this to Minimum or Off may improve the brightness (though it will consume more power).
    • Try to adjust your Picture Settings manually by accessing the Picture Mode settings sub-menu. Increase the backlight, brightness, and contrast.
    • If all else fails, choose Reset at the bottom of the Picture Mode Settings menu, then try again.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. if the picture is not improving enough when adjusting the settings.

The Picture Test option will display a test image on the TV, and you will decide if it is displayed correctly. To access the Picture Test:

Press the Home/Smart  button on your remote, then click the Settings icon in the top-right.

picture test image
picture test image

Access the Support menu, then click Picture Test.

A test image will be displayed; note whether it is dark/dim, then proceed to the Troubleshooting section.

picture test image
  1. Is the image dark/dim during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
  2. The Picture Test runs with optimized picture settings. If the image was still dark/dim, try the following:

    • Navigate to Settings > Picture.
    • Use the Picture Wizard feature for the easiest, most reliable way of configuring your picture settings.
    • Set the Backlight and Brightness to high values, such as 100.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. and see if the picture improves.
    • If the issue persists, Contact Us.
  3. The Picture Test runs with optimized picture settings. If the image was not dark/dim during the test, your picture settings are likely the cause. Try the following:

    • Navigate to Settings > Picture.
    • Use the Picture Wizard feature for the easiest, most reliable way of configuring your Picture Settings.
    • If your TV has Smart Picture Mode/Intelligent Sensor, make sure it is set to Off.
    • Try some of the pre-set Picture Modes, such as Vivid, Cinema, or Game.
    • If none of the pre-set modes provide a desirable picture, try to adjust the Energy Saving mode. Setting this to Minimum or Off may improve the brightness (though it will consume more power).
    • Try to adjust your Picture Settings manually by changing the values below the Picture Mode. Increase the backlight, brightness, and contrast.
    • If all else fails, choose Picture Reset at the bottom of the Picture Mode section, then try again.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. if the picture is not improving enough when adjusting the settings.

The Picture Test option will display a test image on the TV, and you will decide if it is displayed correctly. To access the Picture Test:

Press the Home/Smart  button on your remote, then click the Settings/Setup icon near the bottom-left.

Note: Your screen may look a bit different depending on your version of Netcast, but the icons should be in the same general area.

picture test image
picture test image

Access the Support menu, then click Picture Test.

A test image will be displayed; note whether it is dark/dim, then proceed to the Troubleshooting section.

picture test image
  1. Is the image dark/dim during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
  2. The Picture Test runs with optimized picture settings. If the image was still dark/dim, try the following:

    • Navigate to Settings > Picture.
    • (Select Models) Use the Picture Wizard feature for the easiest, most reliable way of configuring your picture settings.
    • Set the Backlight and Brightness to high values, such as 100.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. and see if the picture improves.
    • If the issue persists, Contact Us.
  3. The Picture Test runs with optimized picture settings. If the image was not dark/dim during the test, your picture settings are likely the cause. Try the following:

    • Navigate to Settings > Picture.
    • (Select Models) Use the Picture Wizard feature for the easiest, most reliable way of configuring your Picture Settings.
    • Try some of the pre-set Picture Modes, such as Vivid, Cinema, or Game.
    • If none of the pre-set modes provide a desirable picture, try to adjust the Energy Saving mode. Setting this to Minimum or Off may improve the brightness (though it will consume more power).
    • Try to adjust your Picture Settings manually by changing the values below the Picture Mode section. Increase the backlight, brightness, and contrast.
    • If all else fails, choose Picture Reset at the bottom of the Picture Mode section, then try again.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. if the picture is not improving enough when adjusting the settings.

The Picture Test option is only available on select models. If your model supports it, you can find the picture test by following these instructions:

  1. Access the Settings menu, then choose the Customer Support or Support tab.
  2. Choose Picture Test to begin.
  3. A test image will be displayed; note whether it is dark/dim, then proceed to the Troubleshooting section.
  1. Is the image dark/dim during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
  2. The Picture Test runs with optimized picture settings. If the image was still dark/dim, try the following:

    • Navigate to Settings > Picture.
    • Use the Picture Wizard feature for the easiest, most reliable way of configuring your picture settings.
    • Set the Backlight and Brightness to high values, such as 100. Access the backlight/brightness settings from the Picture Adjust sub-menu.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. and see if the picture improves.
    • If the issue persists, Contact Us.
  3. The Picture Test runs with optimized picture settings. If the image was not dark/dim during the test, your picture settings are likely the cause. Try the following:

    • Navigate to Settings > Picture.
    • Use the Picture Wizard feature for the easiest, most reliable way of configuring your Picture Settings.
    • Make sure Smart Picture Mode is set to Off.
    • Try some of the pre-set Picture Modes, such as Vivid, Cinema, or Game.
    • If none of the pre-set modes provide a desirable picture, try to adjust the Energy Saving mode. Setting this to Minimum or Off may improve the brightness (though it will consume more power).
    • Try to adjust your Picture Settings manually by accessing the Picture Adjust sub-menu. Increase the backlight, brightness, and contrast.
    • If all else fails, choose Reset at the bottom of the Picture Adjust menu, then try again.
    • The lighting in your room can be a strong factor in perceived brightness. Try closing any blinds, shades, curtains, etc. if the picture is not improving enough when adjusting the settings.

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