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LG TV Video is Flickering

  • Video Issues
  • Others
  • Troubleshooting
  • TVs
  • Last Updated 03/10/2014
LG TV Video is Flickering
LG TV Video is Flickering

Video flickering describes the effect of gradually changing TV screen brightness levels. The screen brightness may show a gradual change at random intervals or a rapid change over a period of time. Video flickering is usually caused by incorrect picture menu settings or external devices connected to the TV.
Menu Settings
TV Picture Test
External Device Connections


Menu Settings
The Picture menu setting may be the cause of the video flickering. The TV energy saving mode setting may affect the presence of video flickering.

1. Press the SMART button Smart Button on the remote control and select Settings > PICTURE > Energy Saving, then press Wheel or Enter.

Energy Saving

2. If the Energy Saving is set to AUTO, select it to OFF. If this resolves the issue, then no further action will need to be taken.

Energy Saving Menu

3. If the issue persists, or if the Energy Saving is already set to OFF, then continue to TV Picture Test.
TV Picture Test

Run the TV Picture Test to determine if video flickering is caused by the TV, or by the external device connected to the TV.

1. Press the SMART button Smart Button on the remote control and select Settings > SUPPORT > Picture Test, then press Wheel or Enter.

Picture Test

2. The menu below will appear on the test picture. Select which option best describes the result you have. There will be guidelines given to you on the TV screen, depending on which option you choose.

Picture Test Support Test with problem
   
If No is selected, then the following message will appear: If Yes is selected, then the following message will appear:
No Error With Error

3. If the Picture Test fails follow the On Screen Instructions. If the Picture Test passes, then proceed to External Device Connections.
External Device Connections

External devices connected to the TV may cause video flickering if the cables are not secured in the port, if cables are damaged, nearby electrical interference, or corrupted video output.

1. Power OFF the TV and the external device.

2. Disconnect the video cable from both the TV and the external device.

3. Inspect the video cable for physical damage.

4. Reconnect the video cable to both the TV and the external device.

5. Check so the video cable is not close to an external loudspeaker, or other electrical device.

6. Power the TV back ON, wait for the TV to reboot, and then power the external device back ON.

7. If the issue is resolved, no further action is required. If the issue remains, proceed to the next step.

8. Try connecting another cable to an alternate input port. If the issue remains, proceed to the next step.

9. Try a connecting a different external device to the TV. If the issue remains, your TV may require service.

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