Switch stopped charging after a third-party dock or charger (M92T36 / BQ24193 diagnosis)

Written by the CircuitScope research team in our own words, from the sources listed at the end, and checked by our moderators.

Third-party docks and poor USB-C accessories are well known for killing the Switch's USB-C power controller (M92T36), leaving a console that will not charge and will not output to a TV. This guide shows how to confirm the fault with a USB meter and multimeter, and how repairers replace the M92T36 - and, less often, the BQ24193 charger chip.

Difficulty: Expert · Time: about 2.5 hours

Also applies to: Nintendo Switch (OLED Model)

Related codes / lights: 2101-0001 - mentioned in one forum thread on a console with BQ24193 problems; the link is not confirmed

Symptoms

• Console stopped charging straight after being used in a third-party dock or with an unbranded charger/cable
• Dock LED blinks or stays green but there is no picture on the TV
• Inline meter shows a brief draw (e.g. 0.04 A at 15 V) on the Nintendo adapter that then falls to 0.00 A
• Console may still charge slowly from a basic 5 V charger but not from the Nintendo adapter
• Console completely dead once the battery runs flat