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leoluca  
#1 Posted : Monday, June 14, 2021 12:50:20 PM(UTC)
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leoluca

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Joined: 6/14/2021(UTC)
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United States

Need help troubleshooting power but no heat for this model. Unit would power on and makes a noise as if the magnetron is powered but it does not deliver heat.

I have tested the following components: 4 T.C.Os, 2 fuses, door switches, magnetron reads correct resistances, high voltage transformer reads correct resistances, H.V capacitor is not shorted between leads or leads and ground. H.V diode shows a good voltage drop and open when reversed.

The only strange things i've noticed are one of the wires connecting the h.v transformer to the magnetron was melted/burned at the connection point. additionally when measuring the internal resistor on the h.v capacitor my multimeter showed a very high value momentarily and then showed open, not sure if this is simply because the internal bleed resistor is such a high value. Please help, any info is very appreciated. thanks


[img=https://photos.google.com/search/_tra_/photo/AF1QipNFs8MmaykMPejpMe6TTb1GXLMwu8B59Vu-eEqL]burnt connection[/img]
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ThatGuy  
#2 Posted : Tuesday, June 15, 2021 1:23:04 PM(UTC)
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ThatGuy

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Pic won't work. Magnetrons can test OK and still not work. Did you try replacing the burnt connector?
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