lg47lc7df the raster comes on but no picture

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  • djpat1974
    Senior Member
    • Nov 2014
    • 65
    • united states
    #1

    lg47lc7df the raster comes on but no picture

    Hi i have an lg tv 47lc7df the raster comes on but no picture i change the power board and still same problem exist so i change t-con ams main board still same problem please look at the picture any help will do thanks for your help
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    • CapLeaker
      Leaking Member
      • Dec 2014
      • 7986
      • Canada
      #2
      Re: lg47lc7df the raster comes on but no picture

      Not too much you can do there. You changed all the boards already. There are a couple of things that come into my mind.

      Remove one of the ribbon cables from the Tcon to the LCD, turn the TV on and see what happens. Then do the other side.

      You also can "look" at the LVDS signal with an oscilloscope, while flicking the menu of the TV on and off.

      That's about all.
      Last edited by CapLeaker; 03-04-2016, 06:03 AM.

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