Replacement of charcoal filter Kerianne S. • Saunderstown, RI • September 29, 2014 Appliance: General Electric Microwave PVM1970SR1SS My Repair & Advice I removed the plastic plate at the top of the microwave (behind the door) by unscrewing two screws with a screwdriver. I then pulled out the old filter, and placed the new one in the designated area. No tools are needed to insert the filter....just a screwdriver to remove/replace the plastic plate. Very simple. Was this review helpful to you?