you don't,there are very high voltages inside the unit,the capacitor can store up to 10.000 volts,we use a tool to short it to earth,there is a bleed resistor inside the cap,but we short it anyway,if the fault in in is magnetron its cheaper to buy a new microwave mate,the cap,or diode can also cause this fault,my advice is do not open the micro wave,
mm, April 2013
