[matador]

Fan works but air coming from vent in freezer is not cold. Light works. Ice cubes melting and water dripping out. I adjusted the temperature over night and that didn't work. What could be wrong? or what part do I need to get freezer to work.

[woodchuck]

Below the evaporator fan is the evaporator coils. Remove the back cover in the freezer to observe the frost pattern. stopped up? clear? ice in one spot . frost everywhere.

If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat
Refrigerator Repair Guide: How To Fix a Refrigerator - ACME HOW TO.com

Your unit doesn't have a timer. The defrost cycle will controlled by your control board, part 801 on this diagram.