Answer Hi Peter. Remove the unit. Remove the cover. Discharge the capacitor terminals by using a rubber handle pair of needle nose pliers and shorting the 2- terminals together a few times. Use gloves to protect yourself from sharp edges. Note the magnetron wires as they are hooked up. You will unbolt the magnetron part # W10245183 to remove and replace the magnetron. Thank You. Read More... Answered by AppliancePartsPros.com | Tuesday, February 28, 2012