People have always been dubious about the safety of microwave ovens. I came across a microwave that kept whirring and ...

"Taking out the microwave door has the capability of damaging the ... The FDA notes that oven radiation injuries are caused by exposure to large amounts of microwave radiation leaking through ...

(i) Microwave ovens shall have a minimum of two operative ... must not be removable without disassembly of the oven or its door. A magnetically operated interlock is considered to be concealed ...