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
Automatic Answer
We may have found other answers which could help you.