주요 콘텐츠로 건너뛰기

Reactivate USB Port after electrical overload

영어
네덜란드어

1 단계 번역중

1 단계
없는 이미지
SMC reset and electrical checks
  • Both USB ports of a MacBook were dead after a shortage or overload on a Ramps Board that was connected to the Mac via an Arduino Board.

  • Normally Mac OS shows a message that tells you that the USB device got deactivated due to a power surge on that port. In this case the message wasn't displayed. It was later displayed after a reboot. Anyway both USB ports were instantly dead.

  • Here and there in the internet people advise to perform a SMC reset. That was done but didn't help. But you should try the SMC reset first.

  • Make yourself familiar with the pinout of your USB cable. Find the ground (GND) and measure with a multimeter if there is still an connection between both ground pins of the USB ports.

  • Check that there is really no power between ground and the +5V pin of the USB cable.

여기에 번역 삽입

여기에 번역 삽입

여기에 번역 삽입

여기에 번역 삽입

여기에 번역 삽입

귀하의 기여는 오픈 소스 Createive Commons 라이선스 하에 허가되었습니다.