HP L2025 vertical lines

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  • Half-Saint
    Badcaps Veteran
    • Jan 2010
    • 213
    • Slovenia

    #1

    HP L2025 vertical lines

    Hi guys,

    I was just given this monitor for free. It kind of works but there are two vertical lines across the screen. My guess is that there's something wrong with the panel. I tried wiggling the cables and the lines stayed put. Everything else appears to be okay. Is there any way of repairing this or is the screen beyond hope? I really like the way it's built, very heavy and sturdy and nice picture quality. It even has S-Video and composite inputs which would come in handy for emulation so I'd be sorry to see it go. Also 4:3 screens bigger than 19" are getting hard to find and this one can do 1600x1200.

    Cheers

    Last edited by Half-Saint; 06-21-2015, 06:59 AM.
  • Half-Saint
    Badcaps Veteran
    • Jan 2010
    • 213
    • Slovenia

    #2
    Re: HP L2025 vertical lines

    Well, I'd just like to figure out what to do with this monitor. Scrap it for parts?

    Comment

    • Half-Saint
      Badcaps Veteran
      • Jan 2010
      • 213
      • Slovenia

      #3
      Re: HP L2025 vertical lines

      Just finished inspecting the inverter board and found that both 470uF 25V caps were replaced once in the past. The person who did it just snipped off the old caps and soldered the new caps onto the legs of the old caps. One of the cap legs was basically in the air so I cleaned the holes and properly resoldered both caps.

      Unfortunately this didn't fix the lines on the screen. I still suspect that there's a fault in the LCD panel..

      Comment

      • samsonite
        Member
        • Jul 2015
        • 46
        • USA

        #4
        Re: HP L2025 vertical lines

        I know nothing about fixing vertical lines, but a quick search on Google points to faulty ribbon cables or their connections. I would look at that after you have ruled out everything else: your computer, video cable (connecting monitor to computer), and computer's graphics card.

        btw, you should probably upload your images as attachments, instead of inline. It makes your post easier to read and faster to load. But, I find that users cannot edit their posts anymore after some time, so perhaps you are stuck with it.
        Last edited by samsonite; 07-27-2015, 01:04 PM.

        Comment

        • Half-Saint
          Badcaps Veteran
          • Jan 2010
          • 213
          • Slovenia

          #5
          Re: HP L2025 vertical lines

          I'll try to wiggle the cables around a bit and see, if anything changes. I know it's not my computer or the DVI cable I'm using. I did my share of googling as well and usually it's the panel at fault. The lines can be seen even on the OSD menu.

          EDIT: It's not the cables, that's for sure. Wiggling the cables does absolutely nothing
          Last edited by Half-Saint; 07-27-2015, 01:58 PM.

          Comment

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: HP L2025 vertical lines

            That is bad LCD panel.
            Defective tab bond or bad drive IC.
            Attached Files
            Never stop learning
            Basic LCD TV and Monitor troubleshooting guides.
            http://www.badcaps.net/forum/showthr...956#post305956

            Voltage Regulator (LDO) testing:
            http://www.badcaps.net/forum/showthr...999#post300999

            Inverter testing using old CFL:
            http://www.badcaps.net/forum/showthr...er+testing+cfl

            Tear down pictures : Hit the ">" Show Albums and stories" on the left side
            http://s807.photobucket.com/user/budm/library/

            TV Factory reset codes listing:
            http://www.badcaps.net/forum/showthread.php?t=24809

            Comment

            • Half-Saint
              Badcaps Veteran
              • Jan 2010
              • 213
              • Slovenia

              #7
              Re: HP L2025 vertical lines

              Originally posted by budm
              That is bad LCD panel.
              Defective tab bond or bad drive IC.
              So, if I understand this correctly, replacing the TCON board won't do a thing? You're speaking about the panel itself?

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #8
                Re: HP L2025 vertical lines

                Originally posted by Half-Saint
                So, if I understand this correctly, replacing the TCON board won't do a thing? You're speaking about the panel itself?
                That is correct. The T-CON is integrated into the panel so it is not replaceable any way.
                For examples:
                http://s807.photobucket.com/user/bud...ml?sort=3&o=24

                http://s807.photobucket.com/user/bud...ml?sort=3&o=33
                Last edited by budm; 07-27-2015, 02:50 PM.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • Half-Saint
                  Badcaps Veteran
                  • Jan 2010
                  • 213
                  • Slovenia

                  #9
                  Re: HP L2025 vertical lines

                  OK, thanks! Case closed, as far as I'm concerned. I'll be salvaging the inverter board, power supply and logic board while the rest goes. Need space!

                  Comment

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