How to diagnose lines on my TV screen

Last modified : Sep 10. 2018
QLED Q9 TV

There are a few different ways you might see lines or missing pixels on the TV screen. To determine whether this is a software problem or a hardware issue, please follow the steps below:

1 Check whether the lines on the screen are moving or permanent.
2 If the lines sway, check the input source (HDMI 1, Video, PC, etc.) and connection to see if they are properly connected. Disconnect and re-connect the video cable/HDMI to check if the issue is resolved.
3 Pull up the Menu screen and check whether the issue persists.
4 Perform a Picture Test by selecting the following options from your remote control Menu > Support > Self Diagnosis > Picture Test and follow the prompts.
Smart TV: There are horizontal/vertical lines on the TV screen

If the issue is intermittent, or does not always show in the picture test, it is worth booking a technician to service the TV as it may still be a hardware fault.

5 If the lines stay on the screen no matter what input source you use, please call 1300 362 603 (in Australia) to speak to our Samsung Care experts. We can help find out whether your TV is covered by warranty, and book a technician for service. To find the closest Service Locations to you click here .

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