Whirpool refrigerator, freezer fine, refrigerator... This 15 year old refrigerator has a

Question

This 15 year old refrigerator has a perfectly fine freezer section. The refrigerator section is barely cool, not cool enough for anything perishable. I guess it is time for a new fridge, but I know there must be a way to fix this problem. There is no fan running or air blowing in the refrigerator. Could this be a fan problem? I can't seem to find out where it might be. It is a model # ET 20NK. Should I bother trying to repair this or give it up for dead?