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UE55KS7500U , component ID help please .

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    UE55KS7500U , component ID help please .

    Hi all

    This set has no power

    CP810 blown apart . Can anyone help with value ?

    PSU P/N = BN4400878A
    Attached Files

    #2
    Re: UE55KS7500U , component ID help please .

    looks to be the same as cp813, could probably go up a little in voltage.
    Last edited by nomoresonys; 07-01-2022, 04:56 AM.

    Comment


      #3
      Re: UE55KS7500U , component ID help please .

      Thanks very much for your reply

      Checked through my power supplies & found one with an almost identical part of circuitry .

      Cap used was a 470PF

      After replacement powered the module in stand alone , PFC at 390V & chopper secondary supplies also seemed good

      Fitted back into TV yet still no power & PFC drops to 100V .


      Disconnected everything from PSU , but again but PFC stays low .


      Suspect the violent demise of CP810 has caused some other issues or at least weakened some associated components .

      Oh well , not an easy life .

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        #4
        Re: UE55KS7500U , component ID help please .

        wonder if it messed up that diode or transistor on the heatsink next to it?

        Comment


          #5
          Re: UE55KS7500U , component ID help please .

          Would most likely need to replace FET next to cap , plus drive chip .

          Don't have any of them in stock .

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            #6
            Re: UE55KS7500U , component ID help please .

            yep, prolly got that fet/transistor bad, maybe test it out of circuit.

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              #7
              Re: UE55KS7500U , component ID help please .

              can't remember things but seems like there must be a way to test the ic related to that fet.

              Comment


                #8
                Re: UE55KS7500U , component ID help please .

                Probably easier just to order one a replace it .

                Cheap enough , only downside is the wait from China .

                Comment


                  #9
                  Re: UE55KS7500U , component ID help please .

                  I hear that, sometimes I try ebay, i know it's a crapshoot, might get junk, only thing to do is go by buyer feedback I guess.

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                    #10
                    Re: UE55KS7500U , component ID help please .

                    To be honest , had my fingers burnt several times buying components from random Ebay seller .

                    If i have to buy outside of the UK , or Ebay , i only use trusted sellers that i know source quality parts .

                    Comment


                      #11
                      Re: UE55KS7500U , component ID help please .

                      yep, after once bitten, I started checking out their reputation real closely, it's a shame but you gotta be cautious of the new sellers, because there's so many fly by night, hit and run scammers out there.

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                        #12
                        Re: UE55KS7500U , component ID help please .

                        Set going out with a replacement board .

                        I will repair original in my own time when parts arrive .

                        Can confirm CP810 is a 470PF

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