David G Gastonia , NC June 07, 2016 Appliance: Model DMR 78 AHS Pe error code on samsung dishwasher Downloaded repair manual from Samsung's website. Power control board malfunction matched the error code and intermittent symptoms. Confirmed on AppliancePartsPros website that their PCB on offer was indeed the correct PCB for my model. The PCB arrived promptly, and it was straightforward to put it in. Took about 30 minutes. Be warned that it requires a TORX driver to get the door apart to reach the PCB, and at least one extra hand is needed. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes