nintendo switch fan dont work

Discussion in 'Switch - Console, Accessories & Hardware' started by andres1234, Nov 21, 2019.

  1. andres1234
    OP

    andres1234 Member

    Newcomer
    1
    Nov 21, 2019
    Chile
    hi
    i have nintendo switch with problems in fan conector, short in 2 and 4 pin
    can somenone have similar problem have any idea?

    switch fan.jpg

    and i have this one to the ground red and green lines , i change number 2
    IMG-20191121-WA0023.jpg


    i repair this switch before, changed ic p13usb
    sorry but i dont speak or writing fine english, i from chili.
     
    Last edited by andres1234, Nov 21, 2019
    FXDX likes this.
  2. SolidSnakeUk89

    SolidSnakeUk89 Advanced Member

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    Jul 20, 2019
    United Kingdom
    Around the world
    Hey Andres,

    puede ser que tengas el rail de voltaje bajo cortocircuitado a tierra.

    hay un diodo cerca del pin numero 4 que has marcado en la primera imagen, you comprobaria que ese diodo estubiera bien con un multimetro

    si cambiaste pi3usb tambien chequearia que no hay ninguno de los railes que llevan 1.8v y 3v a tierra.

    nos podrias decir los voltajes que mides en los pines del conector del ventilador?

    te dejo adjunto una guia que he creado despues de juntar montones de cosas de los foros, igual encuentras algo que te ayude alli :)

    buena suerte !!!! y saludos para Chile!

    — Posts automatically merged - Please don't double post! —

    perdona! el documento anterior tenia todas las fuentes en blanco LOOL aqui corregido
     

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    FXDX likes this.
  3. andres1234
    OP

    andres1234 Member

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    1
    Nov 21, 2019
    Chile
    oohh muchas gracias.
    el primer punto que comentas es cierto, el pin 4 entraga el volaje por lo que tengo entendido, puede ser ese diodo lo he medido pero como es tan chico que cuesta.
    segun he medido en otras switch el voltaje debe ser 3.8 cuando el sensor detecta alta temperatura. tambien he medido el sensor y esta bueno segun lo que pude averiguar.
    observa tus apuntes gracias
     
  4. andres1234
    OP

    andres1234 Member

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    1
    Nov 21, 2019
    Chile

    tengo 0.8 volts en pin 1 y 4
     
  5. Borega

    Borega Member

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    May 26, 2019
    Germany
    English?
     
  6. andres1234
    OP

    andres1234 Member

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    1
    Nov 21, 2019
    Chile
    pin 2 and 4 are in short, image 1 reference
    i replace integrate 2 in the second image but still in short pin 2 and 4
    with or without integrated short still

    bettwe pin 1 and 4 are 0.8 volts, they have 3.8 in normal work
     
  7. gargoyle67

    gargoyle67 Newbie

    Newcomer
    1
    Jul 7, 2007
    I have the same problem with a switch I have, The fan just won't work on it and it overheats, Have you tried removing the
    diode and see if the short goes away ? I may just jumper my fan to 5v and ground on the board if I can't find a way to get rid of the short, it will be on all the time but at least it won't overheat and shut down.
     
  8. andres1234
    OP

    andres1234 Member

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    1
    Nov 21, 2019
    Chile
    what diode my friend
    is nearly conector of the fan?
     
  9. gargoyle67

    gargoyle67 Newbie

    Newcomer
    1
    Jul 7, 2007
    Yes at the bottom marked, although it looks like you board doesn't have one. I've test mine and it shows ground both sides. My board is a patched model.
     

    Attached Files:

    Last edited by gargoyle67, Nov 22, 2019
  10. andres1234
    OP

    andres1234 Member

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    1
    Nov 21, 2019
    Chile
    ok, i have the same model, can remember this piece in my board have two extreme to the ground. i try tomorrow, i dont have replace for this piece , i have 2 more board but they no have this piece.
    i can understand very fine but u have the same problem and could you achieve fan work?
     
  11. gargoyle67

    gargoyle67 Newbie

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    1
    Jul 7, 2007
    I'm going to remove the diode later and see if it removes the short, it should work fine without the diode as it just stops voltage travelling in the wrong direction from what I've read. I had a 8tb hard drive that wouldn't work untill I removed a shorted diode. If it still won't work I'm going to jumper 5v from a cap directly to the fan, not ideal but at least the fan will work.....
     
  12. gargoyle67

    gargoyle67 Newbie

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    Jul 7, 2007
    confirmed removed shorted diode and the short on the pin went away fan started working as it should now ! yay =)
     
  13. andres1234
    OP

    andres1234 Member

    Newcomer
    1
    Nov 21, 2019
    Chile
    i removed diode today, and short is gone
    i dont have time for more probes but i think is fixed thanks
     
    gargoyle67 likes this.
  14. gargoyle67

    gargoyle67 Newbie

    Newcomer
    1
    Jul 7, 2007
    Should work, good job !
     
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