I have a Fanuc 3m model c from 1984 on my mill. The mill is a kiwa excel center-4. I put a replacement motherboard on it because it had a watchdog alarm. I connected everything up just as the original including all the jumpers on the board. I started it up and with the e-stop still in I entered all the original parameters. I then shut the machine down to restart it and when I went to restart it I had to hold down the ready button to get the controller screen to come on. As soon as I let the button go the control shuts off. I don't understand this because just before that I had the control on for about a half hour. Any ideas are very appreciated. Dan.