When I removed the failed element, one wire had separated from its contact and fallen out of reach. I had to pull the oven, microwave wall unit out from the cabinet to do the repair. Four screws held the unit in place. I built a platform to the height of the bottom of the unit and had a friend help me slide the unit onto the platform to access the back and put a new clip on the wire that fell out. It was difficult removing and replacing the double oven unit in its opening, but I was able to replace the bad element without paying for a service call.