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HP x20LED - bright horizontal lines

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    #1

    HP x20LED - bright horizontal lines

    This monitor has a bunch of horizontal lines that are brighter than they are supposed to be. The lines fade from left to right, so the right side of the screen looks normal. The lines appear over the OSD and when there is no video signal, so there is nothing wrong with the computer. The lines are always in the same place while the monitor is powered on, but there is a very small chance that some of the lines will disappear or new lines will appear when it is turned off for a while and turned back on. Since these pictures were taken, the brightest line you can see has disappeared and been replaced by several more bright (almost white) lines.

    These lines have been there since the monitor was a few weeks old, and it has been like this for months.

    I haven't seen this kind of failure before. Can this be repaired?
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    #2
    Re: HP x20LED - bright horizontal lines

    Originally posted by lti View Post

    These lines have been there since the monitor was a few weeks old, and it has been like this for months.
    If it was faulty from new why didnt you take it back? Is it still in warranty?
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

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      #3
      Re: HP x20LED - bright horizontal lines

      I don't remember there being any real warranty, but I could check. All I remember was a 30-day guarantee from Walmart. It worked when it was new, but it lasted about as long as every electronic device I've seen that came from Walmart.

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        #4
        Re: HP x20LED - bright horizontal lines

        Could be a faulty panel, try with the brightness down a notch and check the resolution. You could also try cleaning the connector that goes to the panel
        from the main board.
        Please upload pictures using attachment function when ask for help on the repair
        http://www.badcaps.net/forum/showthread.php?t=39740

        Comment

          #5
          Re: HP x20LED - bright horizontal lines

          The brightness is already turned all the way down, and this appears at all resolutions.

          I'll have to open it and look inside.

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            #6
            Re: HP x20LED - bright horizontal lines

            It looks like it has a bad panel. I don't think it's worth repairing. I cleaned both ends of the LVDS cable and looked for bad solder joints or tab bonds. I didn't see anything wrong that I could repair.

            Strangely, the cable to the button board has thicker wire than the LVDS cable or the power cable for the LED driver.

            The panel is an LG LM200WD3 (TL)(C9).

            I can post pictures of the inside if anyone wants to see them.

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              #7
              Re: HP x20LED - bright horizontal lines

              Here are the pictures I took last year. They might help someone.
              Attached Files

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                #8
                Re: HP x20LED - bright horizontal lines

                Yeah, I think that is a panel issue. Nothing you can do about. Cheap LCD monitors are cheap.

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