Gregory G Louisville , KY May 24, 2015 Appliance: Model WHIRLPOOL MT4155SPS-2 Microwave door would not open when i pressed the button I ordered a replacement door latch. It was simple to snap off the plastic trim bezel on the inside of the door, then raise the existing latch and unhook it from its guide. (Lift and pull sideways until it snaps out of its track.) Read More... 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers