This microwave oven plugged in 220V but the only volt for these microwave is only 120V how can you fix this?

Unlikely because of the voltage difference

No, you would have to have a 220 volt outlet to be able to run a microwave of that voltage.

A device which is designed for 110 volts MUST NEVER be used into a 220 volt outlet. This can damage the unit and make the motor winding burnt.
You need to buy a STEP DOWN TRANSFORMER with a good rating (220volt to 110 volt) so that the unit works perfectly without damaging the motor.

The easiest way to fix a problem at m.w. ovens is to check out if the 220V (Europe) volts feeds the transformer. You must remove the cover, put a glass of water inside the oven, turn on for 3 minutes and measure the tension that come to transformer.
Don't try to measure the transformer output, the tension is very high ~2400V !!!
If at the transformer input there are the 220V (Europe) but the oven still don't heat, the magnetron (m.w. generator) is burned out and must be changed.

good day.

first,the power socket,,try to see the power plug of your machine and the power socket you have..compare it..when its compatible no need to replace,,if not you need a socket adapter.or if not available buy a new plug (if your plug is not compatible to the socket)

secondly,you don't need a transformer if your ac supply in Australia is 120v..
if the supply in your place bigger than 120v...like 220v,230 or 250v..you have to use a step-down transformer with input of what you have in Australia and the output is 120v..and of course pay attention for the wattage of transformer to avoid over heat or burn..I suggest to buy 1500w...

thank you and good luck

Do I understand you plugged this device into 220 Volts? Is this a machine designed for 110 Volts? Check the fuse - if it is burned out (as I suspect it will be) replace it. If the machine comes on - check out its operation. If it does not come on - I think that is the end of the road for your machine. To get to the fuse, remove the cover. Find the fuse near where the cord enters the cabinet.

I don't know where you live (please do not say) nor what the prevailing standard house hold voltage is. I don't know where you got the oven and please don't say. I really don't understand how you accidentally plugged a 110 Volt machine into a 220 volt outlet - that would be interesting to hear about.

Thank you for your interest n FixYa.com

It is a 220V oven and will not work with a 110VAC supply.

In all likelihood the mangnetron has failed, or perhaps even the Power Supply.

Try to replace the ceramic fuse located inside. you have to open the cover first

replace or repair control bord transformer