Accidentally Put Magnet In Microwave Could 17 Fridge Magnets; Damaged A 800 Watt Microwave Because It Wont Heat Again ?

Could 17 fridge magnets; damaged a 800 Watt microwave because it wont heat again ? - accidentally put magnet in microwave

My husband (accidentally) put refrigerator magnets 17 in the microwave, Sanyo, 800W, 0.6 cubic meters. Later cup of soup. I saw the magnets and storage. I tried a different soup warm but not hot at all) after the experiment twice (1 minute and 3 minutes. Vi Classifieds old saying Magnets microwave damage on the basis of his theories of physics. I am now in doubt. Please explain. Thank you.