How to Troubleshoot & Replace Samsung AP4540752 / DC92-00287C Pcb Assy

First, I checked the drain pump by connecting it to 120VAC external source and pump runs. Second, I checked for 120VAC on the drain pump's connector during spin cycle and got 0VAC. Third, I had to rule out that it wasn't a wire harness problem by doing a continuity check between the pump's connector and the controller board. Continuity between the wires are fine. The culprit must be the controller board! So I ordered one from appliancepartspros.com. It took me about 10 minutes to replace the controller board. And since I have the machine apart, I spent another 45 minutes cleaning out all the nasty slimes and cruds in all the hoses. 

After checking the resistance of the drain pump motor (14.3 ohms, right on spec) and the voltage being sent to the pump by the control board (0 volts when it should have been 120 volts), I determined the control board was faulty. Ordered the part through AppliancePartsPros and received it in two days. Installed in 15 minutes with a few screws and electrical connections and it worked like a charm. 

Replaced control panel. Simple repair, just remove and install plugs and screws. 

Everyone thought it was the pump or lines filled with debris, but actually was the main control panel. The washer would stop at 21 Minutes remaining then get the nd error. Was blessed enough to have a relative that had same washing machine (model WF218ANB or WF218ANW) and was able to change the control panels. This solved the problem. Took about ten minutes to replace.Appliance parts pros had just what I needed and had it the very next day. Fast shipping and great service. If you have a Appliance Problem check Appliance parts Pro.com. They will take care of you. 

Ordered new circut board. It was shipped from you very fast, but because of the Memorial Day weekend, delivery was delayed. 

I changed out the pump and made sure all the hoses were clear and still had the problem. Decided to take the chance with the pcb asy as it was cheaper than a new washer. Much easier than i thought it would be. Just disconnect the wires and remove the screws and replace. It worked perfectly after I put it back together. Good price and return policy is why I went with Appliancepartspros.com. 

Replaced PCB board after exhausted all checks for plugged hoses and found missing voltage to drain pump. 

I first put a water pump on and that did not fix it . I did not have a service manual to follow . After reading more about the symptom online I ordered the main control panel and it's up and running .I called samsung for a wiring diagram but we're no help . lesson learned . 

Had to replace pcb board as the stem for the knob was built into the board