Question about Microwave Ovens
I am replacing the original HV transformer with a different HV transformer that I bought off ebay and I need help connecting the wires from the magnetron and HV capacitor to the HV transformer.
If the old transformer still has continuity on all 3 windings, then you should be able to match up the wires with the old one based on the resistance of each one. However, if you do this, make sure you are getting similar readings on the new transformer vs. the old. If I was installing a non-exact replacement, I would put voltage on the primary using a variac set to a very low voltage. Then you can safely measure the high voltage and filiament winding voltages to see if they would be correct if 120 vac was applied to it.
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Posted on May 03, 2016
I’m sorry to tell you this but; I wouldn't recommend using a different transformer, even if it's the same size, it could cause serious damage. The HV transformer should only be replaced with the exact replacement part.
Posted on Mar 23, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
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Some models may have a separate high voltage fuse. If this is blown, there will be no heating but no other symptoms. However, high voltage fuses are somewhat rare on domestic ovens.
A number of failures can result in the fuse NOT blowing but still no heat:
Depending on design, a number of other component failures could result in no heat as well including a defective relay or triac, interlock switch(s), and controller.
If you are interested in doing it yourself the following link will help : Microwave Repair Manual
(**All the above references to tests are found here)
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Mar 17, 2010 | GE JVM1660 Microwave Oven
Oct 18, 2019 | In Microwave Ovens
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