Dennis M Schoolcraft , MI December 24, 2021 Appliance: Whirlpool Microwave Oven 1.5 Cubic Foot MT4155SPB2 Whirlpool Microwave Mt4155spb2: Door would not open push button did not allow door to open. How to replace Door Latch Bracket. Replaced door latch bracket. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes