Have an error code on qm 46. Code is a 15-01 which I understand is the controll board for the motor. I have replaced the two boards that are stacked on top of one another, but still has same problem will light up but will not run motor. Have gone through all of the usual shutting off and on and cranking by hand. This press is used for training students, and student put plate on wrong, plate fell off and got puiled into rollers and began to bind and chatter then stopped and has not ran since. Any help would be very appreciated.