Edgar A Kansas City , MO July 04, 2015 Appliance: Jenn-Air Electric Wall Oven W131B-C Jenn-Air Oven W131b-C: Broken hinge spring. How to replace Hinge Assembly. Turn off power at circuit breaker. Pull oven from wall. Remove trim. Remove side panel. Remove back panel. Remove insulation cover, which is a metal cover very similar to and inside the side panel. Remove old hinge assembly and install new one. Replace panels and trim. All panels and trim are fastened with Phillips head screws. Hinges are fastened with hex bolts, so you need a Phillips head screwdriver and socket set or nut driver. I had one hinge spring broken but replaced both hinges, probably being overly cautious. It took about 45 minutes per side. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours