Dilbag S San Jose , CA February 23, 2015 Appliance: Whirlpool Countertop Microwave 2.0 Cu. Ft. UMC5200BAW00 Whirlpool Microwave Umc5200baw00 / : No power to the applaiance. How to replace Microwave Thermostat. Checked the faulty part was open circuit and replaced it with a new part. One terminal had signs of burning on it. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes