Please fill me in more and I will be happy to list being satisfied:
The discontinued model (ER8AHKXRB01) has less features than others in the categories I have researched here and on other sites. My original message said I took everything apart other than the middle part (temp control and light) on roof of the refrigerator portion. That portion has a thermostat wire extending from its rear.
I do not know what a multimeter is, but after I fully defrosted it a few weeks ago auto defrost did cycle regularly.
No, I do not have one. Some website posts have suggested replacing all three of the parts you suggested at the same time. Do you agree with that? Please answer this, plus where they are located in my unit, and I will happily rate your assistance as excellent. Afterward I'll order the parts and take care of fixing my faulty fridge. Your recommendation about where to buy them is also sought.