How do I replace fuse - Microwave Ovens

You have a serious short circuit, I suggest you call for a service technician

Cause 1
If too much current passes through the microwave circuitry, the line fuse will blow. If the line fuse blows, the microwave won’t start. To determine if the line fuse is at fault, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. In addition, you should investigate and resolve the problem that caused the fuse to blow. If you don’t resolve the underlying issue, the new fuse will blow too

Cause 2

Main Control Board

The main control board might be defective. However, this is rarely the case. Control boards are often misdiagnosed—check all of the more commonly defective parts. If you have determined that all of the other components are working properly,replace the main control board.

Cause 3

Thermal Fuse

The thermal fuse cuts off power to the microwave if the microwave overheats. To determine if the thermal fuse has blown, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. The thermal fuse cannot be reset—if the fuse is blown, it must be replaced.

Since its a electrical isue cal a liscenced professiona to resolve the issue . Your microwave oven isnt at fault . I belive the supplay to it has issue and would have blown anyway.

Although you have not mentioned the model/make, take a look at the video here for replacing a Thermal fuse. Microwave Won Work GE Microwave Thermal Fuse Replacement part WB27X1127

on traditional fuse see
How to Fix Microwave Oven Simple Fuse Replacement

If too much current passes through the microwave circuitry, the line fuse will blow. If the line fuse blows, the microwave won't start. To determine if the line fuse is at fault, use a multimeter to test it for continuity. If the fuse does not have continuity, replace it. In addition, you should investigate and resolve the problem that caused the fuse to blow. If you don't resolve the underlying issue, the new fuse will blow too. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the line fuse.)

I would replace it with a fuse of the same 5kv.09 as replacing with another may overload the microwave and cause a fire.

not recommended to replace with a higher fuse rating or kind

If you know that a fuse is open, you need to find out why it went out before replacing it. There are typically three fuses in any given microwave oven. Line or monitor fuse, cavity temp fuse and magnetron temp fuse.

you must replace the FUSE with the same capacity for example: you will see in the metal fuse the incription 240vac-15amp see if the fuse is Ceramic or Glass, you CAN not use 125vac,10amp or 20amp, the circuit WILL not protect the electronic system, and will dammed another section. Please rectify this INMEDIATELY.
God bless you

open *** and follow the cable which come from the back you will see an enclosure with fuse inside. Remove the fuse and replace with an other one with same specifications

Fuses seldom just go bad on their own, but it's safe to replace. Before you replace the fuse, squeeze the tabs of the fuse holder clips together a bit. Sometimes they don't grip the fuse tightly enough, and this can cause heating which damages the fuse. If the fuse blows again there is a bad part in the oven that will need to be located and replaced. For a small countertop oven, it's probably more economical just to replace the oven than to repair it.

i have a galanz microwave i need to replace the fuse and i dont know wht to buy