Found the defrost control. I turned it about 1/8" or less. There were no clicks or notches in turning. The freezer fan stopped operation after it clicked off. If the defrost heater comes on the light frost on the evaporator coils should melt away?
Found the defrost thermostat, red circular object about 5/8" thick and held on to the evaporator coil with a wide flat spring around the unit top and the evaporator coil bottom. The defrost heater is attached by two screws and easily removed.
I do not have a VOM meter. Where do I place the red/black probes when checking? Color matter in placement or am I looking just for a connection between the two or should there be a reading of ohms/volts to go by?