When a Nintendo Switch doesn't charge, and there is no physical damage to the charge port, your problem may be this ic chip, the M92T36 usb recognition data chip. See our video companion video that covers this diagnosis and repair. We also sell this chip in a repair combo kit together with a usb-c ammeter so that you can assess charging function, and a usb-c charge port.
If you'd rather send your device in for professional repair, click Get Started on our mail-in repair service.
Or come to our microsoldering training to learn to do these repairs yourself!