Nintendo Switch No fan spin and not charging joycons Repair

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Nintendo Switch No fan spin and not charging joycons Repair
Device Nintendo Switch
Affects part(s) Main Logic Board
Needs equipment multimeter, soldering iron, soldering station
Difficulty ◉◉◉◌ Hard
Type Soldering


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Problem description

No fan spin and not charging joy-cons

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Symptoms

  • No fan spin
  • not charging joy-cons

Solution

  • Issues with fan circuit. You can use a voltage injection trick where you briefly inject voltage into the fan (in circuit) to bring the mosfet back to life. Here's A Guide. If voltage injection doesn't work, replace the mosfet above M92T36.
  • Issue can also be caused by a bad CPU fan.
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