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    Samsung UE40D5520 Boot loop

    Samsung UE40D5520 it gets to the Samsung Logo and reboots, does this non stop, Voltages are fine, I am after a main board for it but can't find the right one anywhere ??? can you help please fallow Techs, photos below




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    #2
    Re: Samsung UE40D5520 Boot loop

    Have you inspected the black wire connectors(looking for discoloration) from psu to main brd? I've read that these are fairly common.

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      #3
      Re: Samsung UE40D5520 Boot loop

      Yes all wires look good, its not a terribly old set

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        #4
        Re: Samsung UE40D5520 Boot loop

        I would say upgrade the firmware or do a factory reset.
        http://www.samsung.com/uk/support/model/UE40D5520RKXXU

        This might work for factory reset.
        Turn the power off. On the remote, press Mute followed by 1, 8, 2, Power in sequence.

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          #5
          Re: Samsung UE40D5520 Boot loop

          I had a Samsung un40d6400 that was doing the same thing. With help from the forum it was determined to be shorted led strip.
          They were edge strips.

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            #6
            Re: Samsung UE40D5520 Boot loop

            If I unplug the main board the LEDs come on so I doubt it's a backlights issue. Maybe firmware or main board. Will try the above and try and boot up in service menu mode

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              #7
              Re: Samsung UE40D5520 Boot loop

              Does anyone know of where I can obtain a main board for this please. Pics above

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                #8
                Re: Samsung UE40D5520 Boot loop

                https://spares2repair.co.uk/samsung-...6-atsc-dvb-led

                May be?
                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

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                  #9
                  Re: Samsung UE40D5520 Boot loop

                  Hi Fleckers TV
                  Did you manage to resolve your issue; I think I may have the same problem. Thanks.

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