The part(s) or condition(s) listed below for the symptom Microwave door not opening/closing properly are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
Inspect the open lever for damage. If the open lever is broken or damaged, replace it.
Inspect the door spring for damage. If the door spring is broken, replace it.
Inspect the door latch for damage. If the door latch is broken, replace it.
The door hook engages with the door latch to keep the door closed during operation. Since the door hook is made of plastic, it can break due to regular wear. If the door hook is broken, it won’t release the door properly, preventing the door from opening. If the door hook is broken, replace it.
The button spring is located on the inside of the door open button. If the spring is broken, replace it.
The door open button might have a broken internal component. If the button is broken, replace the button.
For some microwave models, an open lever is used to release the microwave door. If the door won't open, inspect the lever for any damage and replace if necessary.
A microwave door not opening is often caused by a bent or damaged door hook or latch or a broken door spring. For some models, these components can not be replaced separately and you will need to install a new door assembly to fix the problem.
The microwave switch holder is the component that houses the door switches behind the control panel. If the switch holder is damaged or misaligned, the door may have trouble opening. You will need to uninstall the control panel and inspect the switch holder to confirm it is in good condition and secured properly. Replace the switch holder with a new one if necessary.
For some microwave models, an open lever that is part of the control panel is responsible for releasing the microwave door when a push button is pressed. If the door won't open, you may need to replace the entire control panel assembly to fix the problem.