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MC301 on panasonic power supply

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    MC301 on panasonic power supply

    Does the fifth pin from the left on MC301 go to anything on the power supply. I accidently burned the trace off the pcb and have nothing to solder this pin to. I cant see where on the power supply board that pin even goes though. It just looks like a single pad. Any ideas?

    #2
    Re: MC301 on panasonic power supply

    Any more info than that and the pictures?
    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

    Comment


      #3
      Re: MC301 on panasonic power supply

      Here's a pic. This pcb is very damaged after many attempts at soldering and resoldering this board. However i can still get all pins to solder up with a bit of effort. The pin marked in red is the one in question. It looks like just a pad to me, not leading anywhere. However, The MC301 that solders up to this definitly has a pin with traces running to it.
      Attached Files

      Comment


        #4
        Re: MC301 on panasonic power supply

        You should be more precise, which pin number is it, 5 or 10?
        Notice that pins 3,4 and 6 are missing originally.

        edit:
        OK, it's pin 10, RESET
        I would say it's not connected to anything, but can't confirm it sorry
        Attached Files
        Last edited by Hombre; 08-31-2016, 08:57 PM. Reason: posted before i saw OP's answer

        Comment


          #5
          Re: MC301 on panasonic power supply

          Then it would be 10. sorry

          Comment


            #6
            Re: MC301 on panasonic power supply

            Thanks for those schematics. However I'm not seeing where pin 10 is connected to. I can see where all the other pins go to but unless i'm looking at it wrong, pin 10 is just an island connected to nothing. Heres another picture, not much better quality but a little cleaner.
            Attached Files

            Comment


              #7
              Re: MC301 on panasonic power supply

              The schematic pin 10 is also shown not being used/connected, so it is not being used in your board either.
              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

              Comment


                #8
                Re: MC301 on panasonic power supply

                thanks for confirming so the trace burned off on my pcb wont make a difference

                Comment

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