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How to change magnetron - Magic Chef Microwave Ovens

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Open the housing cover by removing the screws at the back and at the sides ( if they have).

remove the wires that is connected to the magnetron( it is safer to discharge first the capacitor by shorting out the leads of the capacitor. a spark might occur ( be carefull) use an insulated screw driver and short the two leads.

after you are sure that there is no more stored power at the capacitor, then proceed in removing the magnetron.

you can remove the sensor at the top, then the 4 screws that holds it in place. be carefull as you pull it off. it has a metal tip at the end of the magnetron.

if you notice the mica cover of the wave guide being dark and almost burnt, do replace it.

check for scratches of the metal near the magnetron. re-paint all metals that are visible. you have to cover all metals from the magnetron to prevent arching.

tnx 4 using fixya,

drcool

Posted on Aug 26, 2008

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Have i been conned by my local technician?


Hi

I think he is correct, the fuse will blow if magnetron is faulty and the magnetron unit will look burned but not the casing that's why there is a fuse to stop the microwave catching fire, take a tip from me it's usually cheaper to buy a new microwave than a new replacement magnetron, the only cheaper way is try and get a used magnetron but then you run the risk of reliability issues it's totally up to your personal choice

Apr 13, 2016 | Microwave Ovens

1 Answer

Magnetron become very hot in afew seconds ... vent fan works good .. i change magnetron also very hot


you must shure that magnetron is faulty. can be another causes: 1) the voltage transformer 2) power diode 3) high capacitor see the diagram attached,
God bless youb598c56c-4715-4b8a-80e5-cfeef466a374.giffb83510a-b483-4399-a7bf-125e39125ae3.jpg

Oct 25, 2013 | Microwave Ovens

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I have a Hamilton Beach 900 watt microwave that will run but will not heat the food


maby it's the magnetron, i need more information, a good way to test the magnetron is to put a small HE-NE lamp in a glass filled with water (HE-NE lamps) are found in any radioshack (La source) store, if the lamp glowes orange it meens the magnetron is good, if it is not glowing then the magnetron is dead, (the magnetron is allmost the price of the oven) it could be a fuse but if you have to change the fuse replace it with the same type (normaly ceramic german type) NOT GLASS

Good luck!

Jan 04, 2011 | Hamilton Beach Microwave Ovens

1 Answer

I have a Inverrter microwave oven that is displaying this code H98 on the screen and wont come on unless i hit stop then it will stop after 20sec what does this mean


The problem is likely to be a magnetron fault. The heater, as a magnetron is a thermionic tube, is not working either because the invertor is not powering it or the heater is open circuit.
The voltages in and around magnetrons are LETHAL!!! If you understand about high voltages, disconnect the appliance from the power socket, check there is no residual voltage on the capacitor feeding the magnetron and diode if there is discharge it in a safe way. Disconnect the magnetron and measure the resistance between the contacts of the magbnetron. There should be a low resistance, say 1/2 to 1 Ohm. If there is a high resistance, the heaters are open circuit - change the magnetron. If the heaters read OK the invertor is faulty - change the invertor.
I hope this helps and BE CAREFULL!

Oct 22, 2010 | Panasonic Microwave Ovens

1 Answer

CHANGING THE MAGNETRON


How do you change the magnetron on your own microwave?

Dec 23, 2009 | Maytag UMC5200AAS Microwave Oven

2 Answers

Smelled like something was burning and stopped heating. Turntable and lights work


March 2012 - GE does not support customers mad.gif

I have GE microwave with a failed Magnetron. It is emitting large sparks. Upon removing the magnetron I found that the sparks left residue where they are leaking from the cylindrical shaped piece on the end of the Magnetron.

The Magnetron is under warranty.

BUT

GE WILL NOT HONOR THEIR WARRANTY AND SEND A MAGNETRON.
GE HAS SENT OUT HUNDREDS OF MAGNETRONS TO CUSTOMERS - SEARCH ONLINE TO SEE THIS IS TRUE.

I called GE PARTS, GE support and GE consumer relations department. They changed their policy two weeks ago and require a service technician to replace the part.

THE COST IS $220 FOR THE REPAIR TECHNICIAN.

Since I already removed the part the service technician would have to put in 3 screws and plug in the cable...FOR $220...I PAID $229 FOR THE MICROWAVE NEW!!!!

DO NOT BUY GE.
DO NOT BUY GENERAL ELECTRIC.

GE DOES NOT SUPPORT IT'S WARRANTIES UNLESS YOU ARE WILLING TO PAY THE SAME AMOUNT THAT YOU PAID FOR THE PRODUCT!!


Further research:

GE Microwaves can spontaneously turn on and start a fire - see Consumer Reports web page here:
http://www.consumerreports.org/content/cro/en/consumer-reports-magazine-march-2012/kitchen-fire-safety.html

Further evidence GE retroactively changing their warranties:
http://www.complaintsboard.com/complaints/ge-california-c197693.html

Nov 30, 2009 | GE JVM1650 1000 Watts Microwave Oven

1 Answer

Changed magnetron on microwave, still no heat up


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

Microwave Oven Basic Troubleshooting Tips

heatman101

567ey

Nov 10, 2009 | Whirlpool MH7140XF Microwave Oven

2 Answers

Just suddenly stop heating - can't find any microwave service.




Did you change the diode as well, if not you need to change it if there nothing wrong problem is a bad magnetron
Professional appliance repair in Los Angeles, California.

Aug 04, 2009 | Sanyo Microwave Ovens

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