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Model: JMC8100ADB Brand: Jenn-Air Age: 1 - 5 years
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junior98nb  
#1 Posted : Tuesday, May 11, 2010 3:46:41 PM(UTC)
junior98nb

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first of all the microwave was blowing fuses anytime you tried to heat anything I tested the mag and it tested good Then I replaced the diode and the capasitor and it still pop's fuse even with the mag disconnected completely I am suspecting the transformer everythin works untill try to cook. Any help on testing the transformer or am I doing something wrong?
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Gene  
#2 Posted : Tuesday, May 11, 2010 5:59:24 PM(UTC)
Gene

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Originally Posted by: junior98nb Go to Quoted Post
...the microwave was blowing fuses anytime you tried to heat anything...


Fuses inside the microwave or the house fuse?

If inside, then check all door switches and how they are engaged when the door closed.

Here are the breakdown diagrams and Replacement parts for JENN-AIR JMC8100ADB Mwave - Mounted Over Range/wo | AppliancePartsPros.com

Gene.
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junior98nb  
#3 Posted : Wednesday, May 12, 2010 4:07:28 PM(UTC)
junior98nb

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They all checked out and it is the inside fuse that is blowing .
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Gene  
#4 Posted : Thursday, May 13, 2010 7:54:29 PM(UTC)
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According to the Service manual (page 24) you have to check the high voltage transformer as well as the blower motor and/or control board. All procedures are described in the Service manual.

Gene.
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junior98nb  
#5 Posted : Friday, May 14, 2010 5:34:29 AM(UTC)
junior98nb

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Thank you I will procede to check the components to see what is wrong Thanks again
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tvtech  
#6 Posted : Friday, May 14, 2010 10:53:01 AM(UTC)
tvtech

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make sure that right where the microwaves leave the magnetron there is not any black burned stuff or any thing that will cause a refelction back . sometimes there is a clear piece of plastic of some sort that will get all black and cause a reflection issue causeing magnetrons to blow or fuses to open
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junior98nb  
#7 Posted : Friday, May 14, 2010 4:46:55 PM(UTC)
junior98nb

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there was no sign of arking in the cavity so there is no black stuff in there thanks
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