LG 47LM7600 Backlight works but no picture

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  • jimfixit
    jimfixit
    • Sep 2014
    • 8
    • USA
    #1

    LG 47LM7600 Backlight works but no picture

    Help. Picked up a LG 47LM7600 LED. Initially, the screen looked like it split then the picture went black. The backlight still works and it will fluctuate according to the image being projected. I think one of these caps for the driver/buffer board is out but having a hard time identifying them. Does anybody have a schematic or parts list I can reference off of? The screen is a LC470EUH. Thanks
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    • cuestaj1707
      Member
      • Sep 2012
      • 24
      • usa
      #2
      Re: LG 47LM7600 Backlight works but no picture

      Hi I have the same problem whit a Tv like this do you have any resolution on this issue?

        Comment

        • Blueeyes
          Senior Member
          • Jun 2015
          • 60
          • Uk
          #3
          Re: LG 47LM7600 Backlight works but no picture

          Just my 2 cents have you tried seperating the upper and lower board to try narrow it down and tested all voltages?

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: LG 47LM7600 Backlight works but no picture

              So all you have now is just a grey glowing screen?
              How about the pictures of the whole backside of the TV so we can see all the board?
              Do you get power supply Voltages feeding that board?
              http://www.datasheet4u.com/datasheet....php?id=906971
              Last edited by budm; 07-12-2015, 04:18 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

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