Nintendo Switch Joycons not charging or connecting Repair

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Nintendo Switch Joycons not charging or connecting Repair
Device Nintendo Switch
Affects part(s) JoyCons
Needs equipment multimeter, soldering iron, soldering station
Difficulty ◉◉◉◌ Hard
Type Soldering


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Diagram showing resistor layout (Figure 1)

Problem description

Fixing an issue where the Joycons are not charging or connecting/pairing. Joycons aren't charging (on one or both sides), the fan works, and the side-rail is confirmed working.

Symptoms

  • Joycons not charging or connecting/pairing
  • Joycons aren't charging (on one or both sides)
  • The fan works
  • The side-rail is confirmed working.

Solution

Right Joycon DC-DC converter (Figure 3)
Left Joycon DC-DC converter (Figure 2)

Measure both resistors. 18kohm on both resistors (Figure 1) indicates a failed/shorted capacitor (even if the cap does not test as a short). Resistors should measure 100kohm and 22kohm respectively.

Measure pin 6 (Figure 2 & 3) in diode mode-- it should read 0. If it reads 0.6v drop this reinforces the capacitor failure.

If resistors check out, the DC-DC component may need replacing

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