Unplug the microwave from the wall outlet.
Remove the two screws, located on the front or top of the grill at the top of the microwave.
Pull the grill off of the microwave.
Remove the mounting screw from the top of the control panel.
Lift the control panel up and out to loosen. Look behind the control panel to ensure there are no metal tabs securing the control panel in place. If there are metal tabs, gently rotate the control panel to free the tabs.
Transfer the wires from the old control panel to the new control panel one at a time to ensure that the wires are properly installed.
Install the new control panel into the microwave and secure using the mounting screw that was removed.
Replace the grill from the top of the microwave and secure it using the screws that were removed.
Plug the microwave back into the wall outlet.