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Sanyo microwave fuse blowing -drawing too much current

I dont have any lit. on the machine and cant locate any model number.!!! The machine quit working I was told. Found a blown fuse. Did not have any replacement so I fitted a thin wire. The machine seemed to work. It had nothing in. As I watched the wire became red hot. Before it blew the circuit breaker of the main board disconnected. Several tries gave the same result. I have another magnetron and transformer. They all give the same ohm readings. Seems unlikely all units would be faulty. The turntable motor functions normally as does the cooling fan-no shorts detected. Dont know how to check the capacitor
Can you help? Rob alias truffle. Jhb. R.S.A. 09/11/08

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  • Thandanani Nov 24, 2008

    Hi, I found the links very helpful esp. the sample pages which makes me realise how much I need to learn!! I am still testing the cap. and transf. Seem to be OK but I am not sure. Some one with more know-how will help me confirm that today. I did not explain myself very well-it was the circuit breaker for the whole house mainboard that tripped.

    Much as I would like to I dont know that I can risk ordering the instruction material. So much disappears from our mail especially CD disks and that would be R1000 down the drain. Wish I had known before as I just came from the USA. First I will try to find something locally. In any case I plan to learn a bit more about it before I spend much more time fiddling on the machine.

    I will try to let you know if ever I have any success.

    So far at least I have had some fun and....no shocks!!

    Regards,

    Thandanani.

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Wow, I've never heard of a microwave having a circuit breaker on the main board.

I would suggest that you test the capacitor and the high voltage transformer.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/cap_test.html
http://www.gallawa.com/microtech/xformer.html

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Nov 21, 2008

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http://www.gallawa.com/microtech/cap_test.html
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We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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