Terrance B Gray , LA June 20, 2022 Appliance: Samsung Dryer DV400EWHDWR/AA-0000 Samsung Dryer Dv400ewhdwr/Aa-0000 / : Start button was inoperable. How to replace Assy Pcb Sub-Dryer-Sub(6. I replaced with new control board sub-assy. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes