Richard B Spring Hill , FL August 14, 2016 Appliance: Samsung Built-In Microwave Oven SMH9207ST/XAA-0001 Microwave completly dead only a few years old Did some troubleshooting with my multimeter and found the power supply board at fault (I do have an electrical/electronic background). Placed an order for the power supply board, which is officially called Assy Pcb Main, and it was shipped super fast beyond my expectations. Thanks. Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers