This Microwave Inverter Board regulates the power to the magnetron inside the appliance during use. This part is designed to be used with several microwave brands, including Whirlpool®, Maytag®, and JennAir®; check to see if your model number is compatible. We strongly recommend that you hire a qualified technician to safely install this part. Replacing this part will require advanced mechanical training. Specialized tools, complex testing, and appliance calibration may be required.