Samsung ue32h5500 backlight but no picture

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • sordids999
    Badcaps Legend
    • May 2013
    • 2149
    • uk
    #1

    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.
    Tags: None
    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6642
      • Wales
      #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

        • neilc6
          Badcaps Legend
          • Nov 2015
          • 1550
          • Canada
          #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

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: Samsung ue32h5500 backlight but no picture

              Originally posted by sordids999
              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

                • sordids999
                  Badcaps Legend
                  • May 2013
                  • 2149
                  • uk
                  #5
                  Re: Samsung ue32h5500 backlight but no picture

                  Originally posted by neilc6
                  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

                    Previous template Next

                    Related Topics

                    Collapse
                    • TR103
                      Samsung TV model UE50TU: rebooting, backlight, sound, but no picture
                      by TR103
                      Hi, I have a Samsung UE50TU with:
                      - sound and backlight, but no picture
                      - when it arrived, it had a picture for a few seconds
                      - it keeps rebooting
                      - without ribbon cable between the two panel boards, it does not reboot but I have no picture
                      - without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
                      - when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.

                      - without cable between mainboard and lcd panel and with a jumpered...
                      01-22-2025, 04:12 PM
                    • Ierwin
                      Samsung UE60KU6079 backlight okay mainboard responsive, no picture, no sound
                      by Ierwin
                      Hello everyone,
                      Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
                      The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
                      He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
                      I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
                      Anyway I still fully expect that there has been something seriously damaged...
                      05-13-2025, 03:31 PM
                    • shelby5041
                      Samsung LCD TV no picture backlight on no 12v at tcon
                      by shelby5041
                      hi
                      i have a samsung lcd tv

                      it powers on with sound and backlight but no picture

                      all voltages from PS are good 12v 3.3v and 5v

                      whats odd is that at the tcon i tested voltage across the fuse on the tcon and i get 0v

                      i figured main board issue..so i ordered a used main board....when i put replacement main board in i still have same issue

                      no 12v at the tcon fuse

                      i disconnect the panel ribbon cables to rule out any panel issues and i still have no 12v at the tcon fuse

                      the odds of having 2...
                      10-08-2021, 08:21 AM
                    • Fenzon
                      Samsung UE43NU7122 has Picture, but no Backlight
                      by Fenzon
                      Greetings fellow DYIers, the moment I discovered this community forum, nostalgia has hit me pretty hard, this early web 2.0 look and feel is close to home. I can't describe my happiness seeing active forums that survived today, and its not just yet another centralized propriety subreddit.

                      Before I describe my issue with this particular TV, I would like to let you know that I do have basic electronic competence, and some electronic component knowledge. I also am an electrical installation technician student, although we exclusively study alternating currents and our primary...
                      09-26-2023, 03:17 AM
                    • grimreaper420
                      Samsung Odyssey G9 (c49g95tssr) no picture or backlight. Power LED shows
                      by grimreaper420
                      hey guys,

                      i bought 2 samsung odyssey g9's for a decent price. they both have the exact same fault. when plugged into a power source, the blue led powerlight shows, but when turned on there is no picture, no backlight, no menu, nothing. when plugged into a laptop the laptop recognises the monitor, but keeps disconnecting and reconnecting.

                      dont have any schematics or diagrams unfortunately. any ideas?

                      thanks
                      09-03-2024, 03:47 AM
                    • Loading...
                    • No more items.
                    Working...