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GE Microwave still no heat

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I bought a new Multi meter with capacitor and anode function. After testing I ordered and installed a new transformer.

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Old 11-07-2013, 10:26 AM
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Default GE Microwave still no heat
Model Number: SCB2000CBB03   Brand: GE   Age: 5 - 10 years   

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I bought a new Multi meter with capacitor and anode function. After testing I ordered and installed a new transformer. Still no heat. 120 volts supplied to the transformer when the cycle is started.

The anode tests with battery are:
Battery 9.43V
Voltage thru diode 6.0 volt
Voltage over diode 3.06 volt
Reverse voltage 0.0

After cycling the microwave for two minutes the transformer, capacitor, & anode are cool, the magnetron is slightly warm.

The magnetron I took out showed a short from connections to the shell and continuity between connectors. The new (used) magnetron has no short (open) to body and continuity between connectors.

The troubleshooting diagram on the mini manual says if transformer ok?, check diode, if ok? check magnetron, if the filament contacts are NOT open or contacts are NOT shorted to ground, replace the capacitor.



The capacitor is rated for 1.0 uF, mine tests 1.02 uF. Contacts test open.

Either I got a bad magnetron from the person that said it came out of a working microwave and need to purchase a new one or my test of the capacitor is faulted and I need a new capacitor?

Am I overlooking something?


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