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Nintendo Switch - Joy Cons won't charge, fan not spinning

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  • wyga
    New Member
    • Dec 2020
    • 16
    • United Kingdom

    Nintendo Switch - Joy Cons won't charge, fan not spinning

    So, I've got the Nintendo Switch on the bench.
    Issue:
    * Won't charge up the joy-cons
    * Fan is not spinning.
    * Battery discharges very quickly
    * Serial number from joy-cons unavailable

    I have located the shorted diode near the cpu fan connector. Apparently that is pretty common issue. Once the diode has been removed the short is gone.




    Apparently it is going to work fine right know without the diode.
    But... I understand that this diode someone of course put there for a reason. Problem is I don't have a donor board.

    Do you know maybe what are the diode values?
    Anyone had that problem before?
  • sam_sam_sam
    Badcaps Veteran
    • Jul 2011
    • 4679
    • USA

    #2
    Re: Nintendo Switch - Joy Cons won't charge, fan not spinning

    You could use a 1N007 diode ( or equivalent in a surface mount device) in place of the one that is shorted just make sure you have the polarity is correct when you install it or you will have what appears to be a short but it because it installed backwards

    I have seen this type of diode which has the markings ( 7 ) I have found some of them shorted before and I just put a 1N007 in it place
    Last edited by sam_sam_sam; 12-05-2020, 06:44 AM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment

    • wyga
      New Member
      • Dec 2020
      • 16
      • United Kingdom

      #3
      Re: Nintendo Switch - Joy Cons won't charge, fan not spinning

      Thanks a lot!

      I will make sure that polarity is correct.

      Comment

      • BMCappelletti
        Member
        • Nov 2021
        • 82
        • Brasil

        #4
        Re: Nintendo Switch - Joy Cons won't charge, fan not spinning

        Hello.
        Sorry to resurrect this old thread.
        But what if the Nintendo Switch has the same issues (fan not spinning when device reaches 65C and joycons not charging) but it's already a new revision, without the diode on the board?
        What could be causing the issue?

        Comment

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