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Samsung ue32h5500 backlight but no picture

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    Samsung ue32h5500 backlight but no picture

    Hi
    TV has backlights but no picture
    Tcon fuse is showing on both sides 12v
    If I remove each tcon ribbon one at a time I have a picture of a samsung logo so that's good but the only thing I have noticed is if I remove tcon ribbon from the screen VGH is measuring 30v but with both ribbons reconnected I'm getting no voltage of VGH
    So my theory is the screen is possibly faulty ?
    Attached Files
    Last edited by sordids999; 05-04-2021, 06:22 AM.

    #2
    Re: Samsung ue32h5500 backlight but no picture

    Have you measured VGH resistance to chassis. If it's not short circuit could you supply 30V from a power supply with current limit set and see what happens?
    Willing to help but I'm no expert.

    Comment


      #3
      Re: Samsung ue32h5500 backlight but no picture

      If you have image on one side, you can try the tape cutoff method on the bad side. https://techhometravel.com/repair-of...lines-on-a-tv/

      Comment


        #4
        Re: Samsung ue32h5500 backlight but no picture

        Originally posted by sordids999 View Post
        Hi
        TV has backlights but no picture
        Tcon fuse is showing on both sides 12v
        If I remove each tcon ribbon one at a time I have a picture of a samsung logo so that's good but the only thing I have noticed is if I remove tcon ribbon from the screen VGH is measuring 30v but with both ribbons reconnected I'm getting no voltage of VGH
        So my theory is the screen is possibly faulty ?
        Are the tab bonding boards on the bottom edge of the LCD panel?
        Inspect the tab bonding boards for any sign of damage and also check the resistance on the MLCC's (Multi Layer Ceramic Cap) of the tab bonding boards to see if any of them show low resistance reading.
        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


          #5
          Re: Samsung ue32h5500 backlight but no picture

          Originally posted by neilc6 View Post
          If you have image on one side, you can try the tape cutoff method on the bad side. https://techhometravel.com/repair-of...lines-on-a-tv/
          No both sides are good if u disable the tcon ribbon one at a time it's only when you connect both theres no picture

          Thanks

          Comment

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