Hi Im John I will help you with the fridge problem.
Do you have a volt ohm meter to check a few parts ?
Send me the model number please.
Tis is the defrost thermostat is clamped to the top of the freezer coils , you can check this to see if the contacts are opened or closed if their open replace the defrost thermostat , if its closed check the defrost heater at the bottom of the freezer coils they should give you reading, If no reading replace the defrost heater, let me know what you find please.
You have to disconnect the two wires on the defrost thermostat , bare the wire ends and use the meter on the resistance setting if no reading replace the defrost thermostat.
let me know how you make out please.
You gave me a poor rating and your the one that cant do the repairs , I really don't think I deserve the poor rating.
All you ave to do is watch the video its shows you how to replace the defrost thermostat.
Sure no problem, I will help you with the problem when your ready just let me know .
Please correct the rating its important.
Thanks and God bless.
this is the part and the video.