Some customers doubt that the output voltage of the power supply board is low, that is because of the misunderstanding of the working principle of the circuit board. Because there is no full workload, the circuit board is in a half-powered state, at this time the traffic light is relatively dark (if you want to test the circuit board alone, just plug in the power supply, and then short the red and black wires at the three-pin interface and the red and black wires in the three-color, you can achieve the normal operation of the circuit board. (At this time, the traffic light on the board is at its brightest state). Customers can test it according to the method we give you.
