Heather S Hudson , OH July 26, 2019 Appliance: General Electric Free Standing Microwave SCB2000FBB01 Ge Microwave Scb2000fbb01: Microwave had power but no heat. How to replace Wave Guide, Mica Cover. We ordered a new magnetron for our GE profile Advantium and watched a YouTube video https://youtu.be/o3-IKLa_ajI. When the microwave started making weird noises and blew out, the mica cover was burnt. It was easy to replace inside the oven. The microwave had to be pulled out of the wall to get to the light bulbs and magnetron. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes