Leslie C Shirley , MA November 26, 2014 Appliance: LG Microwave Oven MV-1501W Lg Microwave Mv-1501W / Awhegse: Broken microwave grill fastener tab. How to replace Microwave Charcoal Filter. Microwave's old grill removed by unfastening two screws. Since the space was open, also replaced the charcoal filter. Put the new grill on, fastened the two screws and presto! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes