Microwave not Heating - Magnetron

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I encounter this complaint all the time. "Everything seems to be working fine, except it's not heating." The clock counts down the time, the lights are on, the fans work.

The main component that heats the food in your microwave is the Magnetron. That is what it looks like on the right of the window. When this stops working, you know. NO HEAT. No Popcorn. That sucks.

What you have to determine from this point is if the machine is worth repairing or not. Most microwave manufactures carry a five year extended warranty on this part. Check your reciepts. If you don't have a reciept, they normally go off of the date the machine was made at the factory. So have your Model and Serial Number when you call to check. You can also check this if you have your owner's manual. In the very back of your owner's manual they list everything that is covered and how long it's covered.

Moving on, let's say it's not covered. Basically, if your Microwave sits on the counter, replace it. The Magnetron will more than likely cost more than you paid for the Microwave in the first place. They range in price from around $90 to $160. Unless your emotionally attached to it and it has sentimental value just get rid of it, it's really not worth repair. If your Microwave is an over-the-range model you have to consider a couple things before you decide. You really need to think about this and make your own determination. If you have taken great care of it and it's a higher end model, it may be worth repair. If its falling apart and just plain ugly and you don't really like it anyway, throw it out.

So, it's higher end and you want to repair it. Should you do it yourself or call in an Expert? That is greatly going to depend on you. If you feel you are comfortable and have great patience and attention to detail you won't have a problem. The job is going to require you to remove the Microwave from the wall. Once the unit is off the wall, you will have to remove the outer shell and some of the panels on the inside to access the Magnetron. The total time to replace this component will take better than an hour. How much longer than an hour just depends on your skill level. If it takes me longer than an hour to replace a magnetron, it wasn't my fault.(lol)

The magnetron is directly behind the control panel area. It is a pain to squeeze out and you may have to ever so slightly bend a panel. That's normal. One important thing to remember. Before you buy a new Magnetron, replace the diode first. As seen to the left here. There is a slim chance that this peice has failed and that's why the magnetron isn't working. Replace it first and see. You need to replace the diode anyway when you replace the magnetron, so it's really not going to cost extra. They are only a couple dollars anyway. And wouldn't it be great if you could repair your Microwave for a couple bucks. But, if you replace the diode and you still have no heat, then go ahead and order and replace the Magnetron.

Some things to watch out for. There is a high voltage capacitor that the diode connects to. Don't

put your screwdriver or fingers across the two terminals on it. It's alot stronger than a 9-volt battery. The capactor is pictured on the right here. You should be careful during the whole repair. Make sure you pay attention to what was plugged in and where. Wear gloves. Have plenty of room to work. Best done on the floor, at least for me anyway.

Below is a video on how to repair your microwave if it is completely not working.  Thanks for watching.

Thanks for taking the time to read this and Good Luck with your repair. If you have any questions or comments please leave them below or on my YouTube.com channel.  My username is applianceoutlet.