LED constantly on

Red LED is always on.
This bypasses the whole board. It only uses it as a power supply of 5 V. The target voltage of the LED is 1.8 V, target current 0.015 A
Red LED is always on.
This bypasses the whole board. It only uses it as a power supply of 5 V. The target voltage of the LED is 1.8 V, target current 0.015 A