My mother has a 6yr old Maytag. Refrigerator/top freezer Model MTB2156DEW. the freezer on top frosts over in the back. The frig looses temp and gets warm. she unplugged it for 24 hours. plugged it back it and it ran fine for about a month. The ice maker quit making ice, the temp was not cold enough in the freezer. It started getting the frost build up in the freezer in the back again. The frig. started getting real warm.
Maytag told her it was probably the defroster and or the heater as well. Can I test the defrost heater, timer, and thermostat or whatever this all consits of. Is there a way to find where these parts are as I do not have a schematic for these.
Any help would be greatly appreciated!!!!!!!!!