lg 3d 42lm620s main board problem

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  • albabis
    Member
    • Oct 2014
    • 18
    • Greece

    #1

    lg 3d 42lm620s main board problem

    Hi guys,I have the tv of the title and after a lightning it stoped working.It blow the fuse of the psu.When I changed it, The led was ok,after I started the tv,The led blinked twice and blow the fuse again.In measurements in the main board,I found ALL caps connected to +1.2V_MTK_CORE,shorted.Does anybody knows if this is a defective main chip lge2112?Because everything else seems ok.
    Thanks in advance.
  • dick_barton
    Badcaps Legend
    • Aug 2015
    • 6642
    • Wales

    #2
    Re: lg 3d 42lm620s main board problem

    It could be a defective IC2400 or any of the capacitor connected to the +1.2V_MTK_Core line having gone short circuit.
    Willing to help but I'm no expert.

    Comment

    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6642
      • Wales

      #3
      Re: lg 3d 42lm620s main board problem

      An electrolytic connected on that line may have gone short circuit.
      I would check C525, C539, C2407, C2408, C2409, C2414.
      Willing to help but I'm no expert.

      Comment

      • albabis
        Member
        • Oct 2014
        • 18
        • Greece

        #4
        Re: lg 3d 42lm620s main board problem

        Originally posted by dick_barton
        An electrolytic connected on that line may have gone short circuit.
        I would check C525, C539, C2407, C2408, C2409, C2414.
        I will check tomorrow,Thanks!

        Comment

        • albabis
          Member
          • Oct 2014
          • 18
          • Greece

          #5
          Re: lg 3d 42lm620s main board problem

          Originally posted by dick_barton
          An electrolytic connected on that line may have gone short circuit.
          I would check C525, C539, C2407, C2408, C2409, C2414.

          I checked everything is ok,I also discovered 1,5v ddr has srted caps and very fastrating is that c2442 and c2444 also line soted bad caps ok.I think its the lge2112...

          Comment

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