Samsung PN50B450B1D showing evenly spaced vertical lines

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  • 205rogers
    New Member
    • Oct 2018
    • 3
    • USA
    #1

    Samsung PN50B450B1D showing evenly spaced vertical lines

    When I first turn my TV on, it works fine for a few minutes and then the attached vertical lines show up across the screen. If i turn it off and back on same thing, works for a few minutes then the lines come back.
    I have read other posts about the T-con PWB. Not sure if thats the problem with mine or not. Hoping to get some advice. Thanks
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    • tvtimmy
      Badcaps Legend
      • Mar 2015
      • 1160
      • usa
      #2
      Re: Samsung PN50B450B1D showing evenly spaced vertical lines

      Do the lines cut through the menu box when menu button is pressed?

        Comment

        • 205rogers
          New Member
          • Oct 2018
          • 3
          • USA
          #3
          Re: Samsung PN50B450B1D showing evenly spaced vertical lines

          Yes. They are always there.

            Comment

            • tvtimmy
              Badcaps Legend
              • Mar 2015
              • 1160
              • usa
              #4
              Re: Samsung PN50B450B1D showing evenly spaced vertical lines

              Ok. Remove the ldvs cable that goes from the mainboard to the control board. Its usually a flat wire. On the control board there is 4 pins. Take a harddrive jumper( for choosing master, slave, etc.) and put it on pins 3 and 4. Plug tv in and look at the test patterns on the screen. If they look good your mainboard is bad.

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