Nintendo Switch Joycons don't charge on both sides and fan does not spin Repair

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Nintendo Switch Joycons don't charge on both sides and fan does not spin 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

Fixing an issue where the Switch won't charge the Joy-cons on both sides and fan does not spin.

Symptoms

  • Joy-cons don't charge on both sides.
  • Fan does not spin.

Solution

Replace failed MOSFET or perform voltage injection method