paulharing, Since you did not post model #, I will post a links to changing the control board in a some models which should help in replacing yours. You can also do a google search using your (make, model,control board replacement). Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=qdtNKOSet78
http://www.handyguyspodcast.com/1253/whirlpool-refrigerator-repair/
https://www.youtube.com/watch?v=N988_wHptUw