Steven S Concord , NC January 20, 2016 Samsung microwave was less than 3 years old when it powered off and would not come back on Looked on internet for problem solution, checked thermostat with multitester - it was defective. Ordered new part, arrived in a few days. Replaced old thermostat and had it working in 30 minutes. 5 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes