dji phantom 3 pro gimbal board is off, I tried to check the normal 12v voltage, for 3v 5v it doesn't exist ... please help sir, what components should I replace ... thanks for the help.While flex cable is the most common point of failure, if electronics doesn't power on, I'd first check the power.
Places on the board where specific voltages should be are marked with said voltage, ie "3V3" or "1V2" or "5V".