Microwaave keeps blowing power fuse when trying to run. What could be my problem?
The first thing I would do is check the high voltage capacitor (#2 on the diagram) for continuity. Very likely it is shorted. Prior to do it you have to discharge this capacitor.
Here are the breakdown diagrams and Replacement parts for MAYTAG MMV4205BAB | AppliancePartsPros.com
Gene.