I removed cover and circuit board gets power but no functionality. The main circuit board recieves 120v the sub circuit board 28v but treadmill display will not turn on as well. The emergency stop key is inserted. On each circuit board there are lights on and some lights off, not sure if they are supposed to be on.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix gym/fitness equipment.