Product review (5 stars): Fixed the warm fridge and the frozen coil in the freezer.
Did the trick perfectly.  If you notice that your freezer is freezing but the cold air quits blowing into your fridge, there is a good chance that it is because the freezer coil is not defrosting.  The reason it will not defrost, is this board needs to be replaced.  Was super easy to install, especially with the resources available on the web and Youtube.