Answer Hello T. Garrett. You will need to unplug the microwave and remove the outer cover off the unit to access and replace the line fuse WP8183507. We will need your model number to help you more with this. Please post your model number with a new question on the parts page. Thank you. http://www.appliancepartspros.com/modelnumber_locator.aspx Read More... Answered by AppliancePartsPros.com | Wednesday, February 29, 2012