PLEASE HELP!! I cannot lose her - 1961 Frigidaire FPI refrigerator

[frogkid11]

Hi everyone,
I have a 1961 Frigidaire FPI 15-B refrigerator and she has stopped cooling in the refrigerator section. The freezer is doing great and keeping the correct temperature but the refrigerator on top is at 70 degrees! I've already replaced the defrost timer and the cold control switch but I'm no appliance technician and not sure where to look next. The compressor runs and goes through the defrost cycle as expected. This unit still looks like it did the day it was sold in 1961 and is GORGEOUS and I cannot lose her. Any help with suggestions for what to look for, test, or replace next is greatly appreciated. Thanks so much!

 

[rp2813]

I don't know for sure about your fridge, but most frost free types employ a fan that blows cold air from the evaporator in the freezer section into the fresh food section.  If that fan isn't working, the fresh food section would be warm, particularly if yours is a bottom freezer model.

 

If your fridge doesn't use a fan and has a separate evaporator in the fresh food section, there may be a blockage in the refrigerant tubing.