Ngoc T Colleyville , TX September 13, 2020 Appliance: General Electric Microwave PEB7226SF1SS Ge Microwave Peb7226sf1ss: Got electric sparks inside the mircrowave when it was turned on. How to replace Magnetron. After removing the cover I saw that the magnetron and thermostat were burnt. I replaced them with new parts. The microwave now works fine. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes