How to Troubleshoot & Replace Whirlpool AP4070403 / 61005988 Defrost Control Board

Replaced defrost heating element and defrost controller. Hardest part or what took the longest was melting ice off of evaporator core with the hair dryer. Watched the videos which were a big help. 

I had to purchase a defrost control board from you my Maytag fridgerator seems to go through these every year and a half can't afford to replace the whole fridge .tools needed a screwdriver and a socket wrench.I don't mind purchasing parts through your store because I get my stuff fast. 

Yes, the part arrived sooner thian I hoped and word Worked great, thank you . 

Watched the video and did the part replacement. Simple as it could be! 

Replaced control board. 

Ordered the defrost timer from Appliance Parts Pros and was in my hand in 2 days. Watched the repair video and had it change in 30 minutes. Refrigerator is back working fine.I would recommend Appliance Parts Pro for your parts needs and this type of repair can be done with no experience. 

First, unplug the refrigerator, or turn off the circuit supplying the outlet. You'll be working near a wiring harness. Safety first! Next, remove the cover inside the top of the refrigerator cabinet. This can be tricky because of the clips in back on each side. I found a couple of videos on YouTube that described the repair process, and they were helpful at this step. I recommend keeping these handy throughout the process. Remove the light bulbs and set them aside. Next, remove the screws that hold the control panel (temperature settings), and remove the panel. Then, remove the 1/4" hex head retaining screws at the back near the water filter assembly. Finally, loosen the screws that hold the control assembly to the top of the cabinet about half way back. Slide it to the right to release it. Be very patient while you do this step so as to not damage the foam. It's helpful to consult YouTube here if you have any trouble. The thermostat control board is in the back right corner of the control assembly. Mine simply popped out. Disconnect the board, then plug in the new one and snap it back into place. Finally, reverse the steps to finish the repair. When reattaching the control panel make sure that the aluminum shield in the control assembly does not interfere with the control rods - they should move freely when the panel is attached. This repair isn't too hard as long as you're patient and work carefully. 

Order new part and replaced it 

Replaced adaptive defrost control board 

Watched a youtube video