Samsung ln46b640r3f led on but won't turn on

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  • jwake
    New Member
    • Oct 2015
    • 7
    • USA
    #1

    Samsung ln46b640r3f led on but won't turn on

    I have a Samsung lcd tv ln46b640r3f that when I bought didn't even turn on the led light. I found this out to be a blown ceramic disc cap that also broke the trace. I have since fixed that and gotten the led light to appear when I plug in the tv but still won't turn on. When I disconnect the main board from the power supply the backlights come on so I believe it is a main board issue. Another thing is when I hit the power button on the remote the led light usually goes out but if I hit the power button on the tv it will not respond. Does anyone have an experience with this? I have access to a multimeter to run tests.
    Thanks in advance
    Tags: None
    • sordids999
      Badcaps Legend
      • May 2013
      • 2149
      • uk
      #2
      Re: Samsung ln46b640r3f led on but won't turn on

      Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

        Comment

        • ReeceyBurger123
          Never Give Up !
          • May 2014
          • 7325
          • Britain
          #3
          Re: Samsung ln46b640r3f led on but won't turn on

          Possibly a Mainboard issue, common problem is that the Psu kills the epprom on Samsungs.
          Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

          https://www.facebook.com/Telford-Tel...7894576335359/

            Comment

            • jwake
              New Member
              • Oct 2015
              • 7
              • USA
              #4
              Re: Samsung ln46b640r3f led on but won't turn on

              This was indeed a main board. When I replaced this a few months ago it has been working ever since

                Comment

                • smithyx
                  New Member
                  • Aug 2016
                  • 1
                  • USA
                  #5
                  Re: Samsung ln46b640r3f led on but won't turn on

                  I have the exact same issue.
                  Where did you find the main board replacement?

                    Comment

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