led info is at
http://wpilib.screenstepslive.com/s/...uick-reference and the roborio user manual
https://decibel.ni.com/content/docs/DOC-30419
The power tab of the driver station will tell you which of the power rails is experiencing the power fault. If removing the speed controllers fixed it, it is probably the 6v rail and you have a bad speed controller or cable.