Greetings to all. I have a microwave that when the food is heating after 2 or 3 minutes the input fuse blows. I changed it to another one with a higher voltage and also burns it (only when working) someone who can help me please and thank you.

it may be that the high voltage zone is failing the magnetron capacitor or the transformer disconnects the wires from the primary of the transformer and tests if it burns

I agree with the previous answer if you are putting a fuse of greater amperage you are already making the first mistake the consumption of a microwave is 5 / 6.5 amper if you burn it it is because there is a problem in the high-voltage traffic, 1.1 micro capacitor or the diode is short or the Magnetto which is a radio frequency lamp is wrong but if you do not have much experience in working with microwaves it will be difficult for you because the traffic can only measure primary and secondary but not current, layer the average with a capacitor the diode only with tester and it is difficult to know if it is good only if it leads to one side and the magnetron only if it is open the rest is experience more I can not help you by this means