Author Topic: kitchen aid microwave kemc378kwh1 not heating all the way  (Read 317 times)

Offline kesteph1154

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kitchen aid microwave kemc378kwh1 not heating all the way
« on: September 10, 2014, 10:08:35 PM »
I CHECKED MAGNATRON FOUND NOT WORKING MICROWAVE NOT HEATING AT ALL. I
REPLACED MAGNATRON MICROWAVE HEATING CUSTOMER CALLED AND STATED THAT
THE MICROWAVE WAS HEATING BUT NOT AS MUCH AS IT DID BEFORE
PROBLEM.CUSTOMER SAYS TAKES TWICE AS LONG TO HEAT COULD REALLY USE
SOME HELP WITH THIS PROBLEM DOES ANYONE HAVE A SOLUTION. :thanks:

Offline domain

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Re: kitchen aid microwave kemc378kwh1 not heating all the way
« Reply #1 on: September 11, 2014, 04:39:44 PM »
capacitor reading?

Offline kesteph1154

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Re: kitchen aid microwave kemc378kwh1 not heating all the way
« Reply #2 on: September 13, 2014, 10:14:38 AM »
Has new capacitor and diode installed any other suggestions ?

Offline LowSL2

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Re: kitchen aid microwave kemc378kwh1 not heating all the way
« Reply #3 on: September 13, 2014, 10:37:54 AM »
The only thing left is the high voltage transformer. Check to make sure the relay supplying power to it on the board is staying on during the heat cycle. Whirlpool has a test for verifying wattage. I can't find it at the moment. Anyone else have it?
LowSL2
15 Years of Professional Appliance Repair Experience

Offline tgoods

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Re: kitchen aid microwave kemc378kwh1 not heating all the way
« Reply #4 on: September 13, 2014, 11:15:53 AM »
I don't think it could be the HV transformer.  I think it's either a bad new magnetron or a mistaken customer.  Here's a temperature rise test you can try.  Check the amp draw while running.  If it's over 12 amps, it's probably good.

 

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