RoboRIO Red Power LED

[Alan Anderson]

The description of the problem and the steps already taken to diagnose it are very good. I regret not having any further suggestions for finding and fixing the underlying fault.

Originally Posted by diverson

...the 6V PWM bus was reading 5.8V.

For anyone worried about the apparently low voltage, it is normal when the 6V bus is unloaded. There's a diode in the supply output that prevents backfeeding; it is bypassed with a FET when enough current is drawn. The voltage then rises to nominal.