LG 47LV5400 No Image

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  • rikrikrik13
    Member
    • May 2013
    • 44
    • Canada
    #1

    LG 47LV5400 No Image



    I got this LG Tvs not working properly.

    I did many test. When everything is hooked up, I got no image, only some lines on the right side of the tv.

    If I disconnect the right side of the T-CON board, I get half screen working perfectly. With both side connected, only lines on the right side and no image at all (sound ,backlight and everything is working).

    I replaced the T-Con with 2 different one, same problem, I replaced the Main board, same problem. Only thing left is the Power supply (seems ok), panel or??

    Please help!!! Thank you
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: LG 47LV5400 No Image

      Bad panel:
      https://www.badcaps.net/forum/showth...ight=LG+47LH55
      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

        • tom66
          EVs Rule
          • Apr 2011
          • 32560
          • UK
          #3
          Re: LG 47LV5400 No Image

          You may be lucky and it is just a shorted SMD cap on one side but I am willing to bet that there is a fault with one of the tab drivers.
          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

            • rikrikrik13
              Member
              • May 2013
              • 44
              • Canada
              #4
              Re: LG 47LV5400 No Image

              Can you explain me a little bit more how can I test a SMD cap?

                Comment

                • cashkennedy
                  Badcaps Veteran
                  • Aug 2011
                  • 668
                  • USA
                  #5
                  Re: LG 47LV5400 No Image

                  Along the side of the screen are thin boards where the 2 ribbon cables from the tcon connect (often you have to disassemble a lot to get to these boards). There are not many parts on these boards, many tab bonds, and a driver (IC chip) every few inches. The SMD caps are small beige cubes, you can test them with the ohm (resistance setting) by connecting your leads to each side, and the resistance should increase very quickly from 0 to out of range oL or something like that. You can also test them with the capacitance setting on your multimeter if you have that setting.
                  Fixed so far 12 lcd's , 1 plasmas, 5 monitors, 0 dlp's (plan to keep the dlps at 0). and 3 atx power supplies, and 2 motherboards.

                    Comment

                    • rikrikrik13
                      Member
                      • May 2013
                      • 44
                      • Canada
                      #6
                      Re: LG 47LV5400 No Image

                      thank you Ill try that!

                        Comment

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