[FONT=Times New Roman][SIZE=3][COLOR=#000000]I have no idea what to test next (see recent repair history below). Since I replaced the evaporator fan motor, the freezer was running 20 F, the refrigerator was fine. Saturday the freezer even went down to 10 F. This morning, 20 F/50 F. I defrosted the coils this evening. I again checked the defrost element ohms (28). I then checked for voltage to the defrost element, using a can of Freez-it to lower the temp of the defrost thermostat. At first I got 64 volts, then with a few more squirts 128 volts. There are two rows of coils in this unit, only the bottom row freezes up. Could there be a restriction in the line?[/COLOR][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]10/18/12: replace defrost thermostat (clips to coils). Tested bad in ice water bath[/COLOR][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]3/20/2013: clean condensor coils. Running hot due to apparent ice jam (defrost water found in bottom of refrigerator).[/COLOR][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]3/22/2013: defrost element reads 28.1 ohms. Replace defective evaporator fan motor (would only turn once you gave the blades a nudge).[/COLOR][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]3/29/13: replace defrost timer (old one tested good). [/COLOR][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][COLOR=#000000]4/1/2013: unit not cooling (20 F/50 F). Defrost element reads 28.1 ohms. Appears to be getting voltage (see above).[/COLOR][/SIZE][/FONT]