Micro oven not heat blowing

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

Look at parts on the FxYa site..Call tech and diagnose problem. Parts are cheaper frm the website than from the tech.

Chek the H V fuse,Diode&Magnetron

Check the door safety interlock switches. Magnatrons are pretty tough but the little switches are not.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Basic Microwave Oven TroubleshootingTips

heatman101p][p[]p

Classic symptoms for failed door interlock safety switches, though it could be other trouble.

Remove the cover and check the operation of the little micro switches that operate when you close the door.

DONT TOUCH THE SILVER CAN - LETHAL.

If you regularly open the door while cooking, the contacts in these little switches become burned. When burned badly enough, they cannot make contact. When they cannot make contact, the mocrowave doesnt know the door is closed and will not turn on the magnatron resulting in no heat.

If you need more help, let me know.

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You have a faulty interlock switch. This is one of two or three switches in every microwave that are operated by the door. The interlock switch is wired to blow the fuse if you try to run the oven with the door open. The switch may have gotten knocked out of adjustment (say by slamming the oven door) or its contacts stuck closed. If there are no other problems with the oven, a new switch should clear this up.

Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
 Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.

I am not an expert on Miocrowave ovens, but from past experience I know that they have a number of micro-switches on the door as safety devices. If these switches are faulty, the last safety feature is to short the supply and blow the fuse to stop the microwave from operating in an unsafe condition. Obviously the switches would have to be checked first before jumping to any conclusions and a number of other faults would probably cause the fuse to blow as well.