Removing an over the stove microwave

Hello pricemh

I like to try to help you, but I need more information on the situation. Do you perhaps have a photograph available to get an idea ?

I believe you have to remove the front vent grill that is probably above the door. When you do that there will be two screws (very long, but you won't be able to see the length) Loosen them and, at the same time, support the bottom of the microwave to avoid having it fall. After you loosen the screws the microwave will tilt forward and you'll have to lift it up slightly because the bottom back is sitting in a groove for support.
Once this is done there will be a metal plate attached to the wall. If you are replacing this microwave with another, match up the new plate with the existing one. You may be able to use the same one again. I replaced my oven with a different brand and the plate that was there worked fine.
[Make sure you unplug the old one before you start, especially if you're working by yourself.