One board does not power on from USB on arrival

rusefi / alphax-2chan

24 pin / 2 channel ECU

2 stars 4 forks source link

Closed rusefillc closed 2 years ago

rusefillc commented 2 years ago

one of five board does not power any LEDs when plugged into USB

rusefillc commented 2 years ago

USB VBUS goes only into MCU module. I see VBUS SRV05-4-P-T7 and nothing else

@andreika-git need some troubleshooting instructions in my search for 5v from USB on that defective board

andreika-git commented 2 years ago

rusefillc commented 2 years ago

@mck1117 can you repair this board? at the moment no life if powered by mini USB. power LED and life expected with mini USB

mck1117 commented 2 years ago

Fixed, cold solder joint on the USB VBUS pin. Reflowed and the board has power now.