42ln5400 dead.

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  • Rickig
    Senior Member
    • Mar 2015
    • 112
    • England
    #1

    42ln5400 dead.

    I have the above mentioned lg tv
    It was completely dead. I removed back and replaced fuse on main board. Now I get red light when on standby. When taking out of standby it flashes 2 times and goes out, no backlight nothing.
    Any ideas
    Tags: None
    • Hamie
      Badcaps Legend
      • Apr 2014
      • 1383
      • UK
      #2
      Re: 42ln5400 dead.

      Put the mainboard in the oven for for 10-15 mins.
      Remove then heat gun it.

      Ghetto reflow.

        Comment

        • Agent24
          I see dead caps
          • Oct 2007
          • 4951
          • New Zealand
          #3
          Re: 42ln5400 dead.

          if the fuse was blown, probably something else is also blown. Look over the board for burnt\damaged components.
          "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
          -David VanHorn

            Comment

            • Rickig
              Senior Member
              • Mar 2015
              • 112
              • England
              #4
              Re: 42ln5400 dead.

              Nothing looks bad. Couple FEts testing oc so Ordered a new psu off eBay only £15 so swap that first.

                Comment

                • Rickig
                  Senior Member
                  • Mar 2015
                  • 112
                  • England
                  #5
                  Re: 42ln5400 dead.

                  Fitted new psu. No change. Refitted old psu.
                  Stripped screen and found 2 duff led. Repaired the leds and got back light working but found I have sound and backlight but nothing on lcd. 12v to tcon.
                  Ordered a tcon as there cheap enough but wondered if it's more likely to be a main board fault?

                  Any advise welcome

                    Comment

                    • Lukkas
                      New Member
                      • Apr 2012
                      • 7
                      • Slovakia
                      #6
                      Re: 42ln5400 dead.

                      Hi,
                      do you have some result with your repair? I have same problem :/

                        Comment

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