Daniel P Houston , TX January 28, 2017 Appliance: Model WB27X26081 Would not heat Replaced the Magnetron. An easy fix, taking only about 20 minutes to fix the problem: disassembly of the cabinet, removing and replacing Magnetron, reinstalling the cabinet, plugging in and turning on to check operation of microwave. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes