Good morning. This is my first time using the forum. I have a GE Spacemaker Microwave Oven and for the past couple of weeks have noticed that it is no longer defrosting food when I try and use that feature. Everything else still seems to work normally including the heating/cooking food so I am not sure what might need to get fixed here. Can anyone provide some insight as to the problem my microwave might have and how much something like this might cost to fix? It heats/cooks but won't defrost.

Thanks very much.