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    short burnt ATSAM4E8E

    Duet Hardware and wiring
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    • iamcheese
      iamcheese last edited by iamcheese

      not exactly sure what i shorted but there is a pretty distinct line burnt from pin 96 on the cpu , i replaced u2 and got the 3.3v led to light up, however all of the endstop leds next to the connectors are lit up and i have no 5v led (this is all when powered from usb) so my question is, what are some things that i should be looking at before i go about replacing the cpu so i can be more sure i dont murder another one

      edit: i should mention that this is a duet wifi 1.03

      T3P3Tony 1 Reply Last reply Reply Quote 0
      • T3P3Tony
        T3P3Tony administrators @iamcheese last edited by

        @iamcheese Pin 96 goes to a heater pin on the expansion header. does that make sense as a way you could have introduced a high voltage into the processor?

        https://github.com/T3P3/Duet/blob/master/Duet2/Duet2v1.04/DuetWifi_Schematic_v1.04.pdf

        www.duet3d.com

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        • iamcheese
          iamcheese last edited by iamcheese

          crap, was looking at the ki cad pcb file and counted over the pins on my board (i can post close up of the cpu if it helps) shoudld be it red marked pad is the one that the leg/pin is burnt completely off

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