No heat. my microwave will not heat up anything. it starts and after 2-3 seconds it makes a

Question

my microwave will not heat up anything. it starts and after 2-3 seconds it makes a buzzing sound. it sounds like the motor is burnt up but i know that it not the case. the microwave is only 1 1/2 months old. from my research it is the magentorid, voltage diode, or capacitor. i am needing to narrow these down because two of the three are as much as the microwave it self.