Refrigerator unable to cool below 50 degrees

The defrost timer was very easy to replace. Two screws and one electrical bracket and that was it. The defrost thermostat required the removal of the freezer shelves and rear panel. A philips for the panel screws and a slotted screw driver to wedge in-between the side and rear panel. The rear panelcame right out. The defrost thermostat is very accessible simply mounted to a metal bracket on the evaporator coil. My only problem was the new thermostat did not include instructions or a picture of a correct installation. The old thermostat did not seem it was installed correctly and it wasn't. It was simply hanging away from the evaporator coil, sort of out in space. Seeing the "V" shape on the new thermostat and metal mounting bracket configuration it was simple to see that it was suppose to fit snug against the evaporator coil. In addition to using the provided twist-on wire insolators I soldered the two electrical connections leading from the frig to the new thermostat. Reverse the above procedure and the job it finished. Now running better than new.