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Microwave HV capacitor


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8 replies to this topic

#1 jmartin919

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Posted 20 August 2013 - 08:36 AM

I have a GE microwave with a 0.95uF 2100V cap (which is shorted out). Can I substitute a cap of similar value, say 0.98uF. or does it have to be exact? How close does it need to be?


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#2 NCARepair

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Posted 20 August 2013 - 09:16 AM

That will work as long as it mounts in the same location.

#3 RegUS_PatOff

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Posted 20 August 2013 - 10:17 AM

... I have a GE microwave with a 0.95uF 2100V cap 

... Can I substitute a cap of similar value, say 0.98uF. or does it have to be exact?

... How close does it need to be?

usually ±10% is OK

as long as the re-placement Capacitor is equal or higher voltage rating


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#4 jmartin919

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Posted 20 August 2013 - 12:59 PM

Is it preferable to go higher or lower? What would be the difference?


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#5 RegUS_PatOff

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Posted 20 August 2013 - 01:13 PM

The higher uF limit is better, but don't go much over the +10%

The Capacitor "smooths out" the pulsing High Voltage DC

and stores a "reserve charge" between the pulses.

A Capacitor with a too high value uF may give the Magnetron too much "initial / peak" power available.


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one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
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#6 jmartin919

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Posted 20 August 2013 - 09:17 PM

Thanks. I placed an order for a 1.0uF cap. Will post back with the results.


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#7 RegUS_PatOff

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Posted 20 August 2013 - 09:52 PM

Thanks. I placed an order for a 1.0uF cap. Will post back with the results.

this GE part ?

http://www.repaircli...R=154&N=1472616

High-Voltage-Capacitor-A60905500AP-01081

OR this Frigidaire part ? :woot:

http://www.repaircli...?R=154&N=892681
High-Voltage-Capacitor-5304423378-009716


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one of my video productions: “Easter Seals: Walk With Me”

every day is Down Syndrome Awareness Day
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RegUS_PatOff > www.youtube.com/watch?v=oPAY2LsKVEw

#8 jmartin919

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Posted 21 August 2013 - 07:41 AM

I bought this one:  http://www.repaircli...05500AP/1472616


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#9 jmartin919

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Posted 24 August 2013 - 08:26 AM

I installed it yesterday and it's working great. Didn't have to replace the diode. Setup a voltage test using my car battery and a resistor and it checked out ok. Thanks for your help.

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