Claude M Plattsburgh , NY July 06, 2016 Appliance: Maytag 30" Electric Built-In Downdraft Cooktop JED8430BDB18 Maytag Cooktop Jed8430bdb18: My cooktop was cracked. How to replace Cooktop (Top Panel). I replaced it by a brand new. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes