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Kitchen Aid Microwave/Oven Model KEMC377KB L01 microwave wont heat

Have replaced the magnetron and capacitor 2 times and has gone out again.....

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: GE Microwave problems after HV capacitor replacement???

The rectifier diode could indeed be bad. But first I would want to know what value (in uF) the old one was and what is the value of the new one? If they're too far off, the difference in the capacitive reactance could throw off the "tuning" of the circuit. The uF value of the capacitor is optimized in relation to the other components used in the system. Of course, you'd also want to be sure your new cap is at or slightly above the working voltage rating of the old one, too.

Posted on Jan 05, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: GE Profile JE1660GB01 magnetron failure?

It pass the resistance tests and still be bad, and I suspect it is.

I would also suggest that you check the high voltage diode to be sure it's not shorted.

If the filament voltage and high voltage are both present at the magnetron terminals, and not loaded down, but there is no heat, then it's the magnetron.

As a pro with over 20 years of expereince, I have always measured the high votlage, but I will never recommend it to a non-professional. Without the right equipment and procedure, you and your equipment can be "fried". No kidding.

Here are some good links to safety & troubleshooting:

http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Dec 31, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: Sharp Microwave oven magnetron blown or faulty

You can e-mail the spare parts manager with your model number here: JHB023@seartec.co.za

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Aug 10, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Whirlpool microwave/oven combo- model #RM288PXS

That would be a problem with your control board. It probably needs a few capacitors and a relay replaced and minor circuit board repair.

We regularly repair these control units for customers nationwide by mail for $39.95 postpaid in about a week with a one-year guarantee.

Feel free to contact me directly (and please remind me of your model number) for more information & help.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

P.S. (to Guest: Please make a new post with your model number. I think your problem is different.)

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Posted on Nov 08, 2008

  • 1 Answer

SOURCE: GE microwave replacement magnetron

I also have a HotPoint (GE) Spacesaver Microwave Oven (MWO)that we got at Home Depot about 3 yrs ago. The magnetron quit yesterday and I found out online that this is a common occurance with GE MWO's. I found this string and thought I would attempt to have GE send me a magnetron to replace the defective original part.

I called Customer Relations (1 800-386-1215) and spoke with Nikita. I informed her nicely that I was aware that this is a common problem with GE MWO's and that I am a Union Electrician who would like to perform this repair myself. I simply needed the replacement part. She was very understanding and asked for the model and serial number and after a few minutes she supplied me with an order confirm #.

The part should arrive in a few days via FedEx and we will be back into space age cooking and also our appliances will still match. Thanks to all who posted to this string and clued me in (You have saved me a C note!).

David in Omaha

Posted on Jan 14, 2009

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1 Answer

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Does not heat food means a problem on magnetron tube and fuse blown in high voltage area. Have it replaced and it will heat again.
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Hello, installing is quite straight forward if you know what youre doing. BUT, be very careful of the voltage in the capacitor even when its off,it is lethal! When you change the magnetron it is advisable that you also change the diodes. Again make sure that the capacitor is fully discharged, by switching the microwave off, unplugging it, and discharging the capacitor with an insulated screwdriver, it will be noisy. Next unsolder the old diodes and fit the new ones(check their polarity). Replace the magnetron and when all looks good,switch it on. If it works, good, if not there could be a power supply problem. 9 times out of 10 its the magnetron. Good luck.

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It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
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hELLO THERE
when a microwave quits heating but every thing else is ok normally
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Investigate these three areas if your microwave won't heat but you hear a loud buzzing or humming noise:
microwave_diode.jpg Power Diode

A diode is an electronic component that readily passes current in one direction only and blocks the flow of current in the opposing direction. If your microwave's diode has become defective, your microwave will not heat and you will hear a buzzing noise. Test the diode to determine if this is the cause of your problem. Replace it if it is defective.

picturena.gif High Voltage Capacitor

A capacitor is an electrical device which stores electricity. A defective capacitor may be why your microwave is not heating but you are hearing a buzzing or humming noise. The capacitor will have to be tested to determine if this is the cause of your problem. A defective capacitor will have to be replaced before your microwave will work again. Make sure you discharge the capacitor before you test it, though.

microwave_magnetron.jpg Magnetron

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It sounds like a failing magnetron. Sometimes they can be intermittent before they finally fail for good.

Chances are your oven has a 5-10 year warranty on the magnetron.

Please note that FixYa is not currently notifying us Experts when Clarification Requests are answered.

To allow us to help you effectively (at no charge), please post a
NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, and your detailed symptoms.

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Mvh1615


It doesnt matter how old a system was. components can be failed at any point in time. unplug the unit. carefully disassembly and visually check the diode near magnetron and capacitor, it might be broken.If seems good, check the thermostat continuity,if beeping. changage your magnetron. be careful capacitor store charges that deadly. discharge the capacitor first.
when you change mag. change the diode too.

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