Jeremy T Belton , TX October 08, 2018 Appliance: Samsung Washer WA400PJHDWR/AA-0001 Samsung Washer Wa400pjhdwr/Aa-0001: Wouldn't power on. How to replace Washer Control Module Assembly. At first, the washer wouldn't turn on consistently - sometimes it would, sometimes not. Then it wouldn't turn on at all. When it was working, the knobs and buttons all worked fine, so I didn't think it was the Control Module, but ordered it along with the Main Control Board anyway just in case. It was a simple matter to remove some screws and un-clip the wiring harness and the control module from its housing. Clipping everything back in, and screw things back together was easy. Washer works again. I'll return the Control Module as it never left the box. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes