Unplug the microwave from the wall outlet.
Remove the screws on the sides of the microwave, then lift the main cover off the top of the appliance.
Remove the screw from the rear of the control panel that secures the control panel to the microwave.
Tilt the control panel forward, then note the location of the wire connectors. If possible, take a picture of the connectors using a digital camera to reference when you install the new display.
Squeeze the tab on each wire connector, then pull the connector off the control panel.
Remove and discard the control panel.
Connect the wire connectors to the new control panel, then position the control panel against the microwave.
Secure the control panel using the screw that was removed.
Replace the cover of the microwave, then secure it using the screws that were removed.
Restore power to the microwave.