Author Topic: Philips AKG652 Microwave blowing fuses  (Read 1419 times)

Offline YossiD

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Philips AKG652 Microwave blowing fuses
« on: November 12, 2008, 11:48:18 PM »
Old Philips microwave (posting from Middle East) blowing fuses.

This microwave oven is nearly 20 years old and has been very reliable. Several years ago the fuse blew and I replaced it and all was well till now.

HV capacitor tested short so I replaced it. Starting the microwave produces a loud hum (like transformer is overloaded) for a second or so, then fuse blows.

HV diode tests open in both directions, but my ohmmeter operates with 3V so I probably can't test it properly. Can an open diode cause the fuse to blow? If not, what should I check next?

Thanks

Offline JWWebster

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Re: Microwave blowing fuses
« Reply #1 on: November 12, 2008, 11:52:59 PM »
Check your mag for a shorted leg.
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Offline Repair-man

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Re: Microwave blowing fuses
« Reply #2 on: November 13, 2008, 05:34:42 AM »
A bad diode will not only cause the fuse to blow, but also creates a loud hum as you described. Try a new diode.
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