Skip to Contents Skip to Accessibility Help
Close

Help Library

Find help information for your LG product

Select a product category and then pick a topic or search a keyword.

Troubleshooting Flickering Video - TV

Troubleshooting Commercial TVs, Healthcare TVs, Hospitality TVs, TVs Last Updated 08/19/2015
Troubleshooting Flickering Video - TV

Flickering video may occur as a side effect of a feature, an issue with a certain video/input, or in rare cases there may be an issue with the TV. Start by choosing your TV type from the images below, then follow some troubleshooting steps to resolve the issue.

Note: Before troubleshooting, please make sure your firmware is up to date. For assistance updating your firmware, visit Updating Your Firmware.

Press the Smart  button on your remote,
then click on the image below that matches your screen.

(webOS and webOS 2.0 have a subtle difference in the top-right,
move your mouse over an image to zoom)

If you do not have a Smart Button, choose HDTV.



Picture Test Instructions (webOS)

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:

  1. Press the Home/Smart  button on your remote, then click the Settings icon in the top-right.
    picture test image
  2. Access the Picture menu, then click Picture Test.
    picture test image
  3. A test image will be displayed; note whether it is flickering, then proceed to the Troubleshooting section.
    picture test image

Troubleshooting

  • Does the image flicker during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • Try a different cable (usually HDMI), your wire may not be working properly (or try the same cable on a different device and see if the problem persists).
    • Check the video output settings of the device you're experiencing the problem with. Improper resolution or refresh rate settings may cause the image to flicker.
    • If the issue persists, Contact Us.
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • If the issue persists, Contact Us.

Picture Test Instructions (webOS 2.0)

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:

  1. Press the Home/Smart  button on your remote, then click the Settings icon in the top-right.
    picture test image
  2. Access the Picture menu, then click Picture Test.
    picture test image
  3. A test image will be displayed; note whether it is flickering, then proceed to the Troubleshooting section.
    picture test image

Troubleshooting

  • Does the image flicker during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • Try a different cable (usually HDMI), your wire may not be working properly (or try the same cable on a different device and see if the problem persists).
    • Check the video output settings of the device you're experiencing the problem with. Improper resolution or refresh rate settings may cause the image to flicker.
    • If the issue persists, Contact Us.
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • If the issue persists, Contact Us.

Picture Test Instructions (Netcast)

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:

  1. Press the Home/Smart  button on your remote, then click the Settings icon in the top-right.
    picture test image
  2. Access the Picture menu, then click Picture Test.
    picture test image
  3. A test image will be displayed; note whether it is flickering, then proceed to the Troubleshooting section.
    picture test image

Troubleshooting

  • Does the image flicker during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • Try a different cable (usually HDMI), your wire may not be working properly (or try the same cable on a different device and see if the problem persists).
    • Check the video output settings of the device you're experiencing the problem with. Improper resolution or refresh rate settings may cause the image to flicker.
    • If the issue persists, Contact Us.
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • If the issue persists, Contact Us.

Picture Test Instructions (HDTV)

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 flickering, then proceed to the Troubleshooting section.

Troubleshooting

  • Does the image flicker during the Picture Test?
    (If your TV doesn't have a Picture Test, choose Yes) Yes No
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • Try a different cable (usually HDMI), your wire may not be working properly (or try the same cable on a different device and see if the problem persists).
    • Check the video output settings of the device you're experiencing the problem with. Improper resolution or refresh rate settings may cause the image to flicker.
    • If the issue persists, Contact Us.
    • Make sure the power cord is firmly inserted into both the TV and the wall.
    • If plugged into a power strip, try to plug directly into a wall outlet.
    • Try to adjust the Energy Saving options by navigating to Settings > Picture > Energy Saving.
    • Check if the Smart Picture Mode or Intelligent Sensor are activated by navigating to Settings > Picture. If this mode is On, change it to Off and choose a static Picture Mode such as Vivid, Cinema, or Game.
    • If the issue persists, Contact Us.

Article Feedback

Q1. Overall, how satisfied were you with the usefulness of this information?
1 2 3 4 5
Q1-1. Why were you dissatisfied with the usefulness of this information?
Q2. How would you improve the information?

Characters left : 500 / 500