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Capacitor test

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Following instructions to test and repair my microwave, I went to short the HV capacitor and it did not have

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  #1 (permalink)  
Old 03-10-2011, 11:12 AM
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Default Capacitor test
Model Number: plmv169dca   Brand: Frigidaire   Age: 1 - 5 years   

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Following instructions to test and repair my microwave, I went to short the HV capacitor and it did not have a charge. I removed the Diode and tested it and it shows it is bad. I was wanting to know how to test the HV Capacitor so I know if I have to order that part along with the diode.


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  #2 (permalink)  
Old 03-10-2011, 11:20 AM
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One quick test for a capacitor is to use an analog meter. Place the probes on the terminals of the capacitorand watch the needle. It should deflect and slowly fall back to the zero position. Reverse the leads, and you should see the same action. This isn't an accurate test of the capacitance, but will quickly show if the action of the capacitor is there. Also test each terminal against the case for continuity. If you do get continuity between either of the terminals and the case, replace the shorted capacitor.

A better test will involve the use of a meter that has the capacitor test frature. If you don't have this feature on our meter, it isn't necessary to go out and buy one that does, unless, of course, you plan to get into the business--then it would make good sense to add this to your tool bag.
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