I have a NordicTrack C2000 Treadmill that won't power on, the console does not light up. I've done the basics; checked that the outlet it's plugged into does indeed have power flowing to it, the circuit breaker on the unit has been switched to the "Reset" position, and the key has been properly inserted. However, the unit still refuses to light up. After opening it up, I see that there is a red LED which remains solid when given power. According to the voltage diagram for the unit, this indicates that the controller is receiving 120 VAC and is functioning normally. However, the console still does not light up when the key is inserted and the buttons do not work either. I've learned just about everything I know about computers by researching and solving my own problems over the years. I'm now a computer science major but I've yet to take any courses in physics. I've always wanted to get into electronics engineering and I figured repairing a treadmill or at least isolating and replacing the bad part(s) would be a place to start. So anyway, the LED indicates that the control board is receiving power but not that the entire board is functioning properly. So, how do I find out if it's properly sending power to the consoles circuit board? There is an 8-pin connector that runs from the controller up through the arm of the treadmill and plugs into another 8-pin connector which is then soldered and glued onto the consoles main circuit board. I have a multimeter, but aside from goofing around with it and a 9V battery, I don't know how to use it.