Question about Sanyo Microwave Ovens

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We need to know a repairer to fix our microwave which made a noise and then would not heat up any more, we live in Midland W.A.

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  • Sanyo Master
  • 8,820 Answers

I would suspect that your high voltage rectifier diode has shorted.

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/diode.html

You can locate Sanyo manuals, part distributors and authorized servicers here.

Your local Yellow Pages should also list a servicer, but you may need to look under Appliance Repair.

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

Posted on Sep 13, 2008

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Buzzing noise


follow this instruction and fix it. God bless you


  1. MagnetronIf your microwave is emanating high pitched or growling noises during operation, the magnetron could be going bad. Normally a nearly silent part, the magnetron uses high voltage and induces the frequency required to cook food. Although normally not a safety hazard to operate, this is a sign that the magnetron is failing and will need to be replaced as soon as possible.
  2. Exhaust fan motorIf your microwave is making a very loud humming noise during operation, it could possibly be the exhaust fan motor. If defective the part will need to be replaced to silence the appliance once more.
  3. Stirrer motorAnother leading cause of a noisy microwave is an expired stirrer motor. With use this part becomes worn and makes a loud grinding noise, which is usually a leading indicator that the part needs to be replaced. The stirrer is a metal blade that is slowly turned by the motor. This action disperses the microwave energy in a random pattern, which heats the food evenly. If the stirrer motor is determined to be nearing expiration, it should be replaced to halt the grinding noise.
  4. Turntable motorA very common cause for a noisy microwave is a worn out turntable motor. This is a relatively easy repair and will put an end to the noise once replaced.

Read more: http://www.appliancepartspros.com/repair-help/microwave-repair-help.html#13#ixzz2ZYUSVYSH
http://www.appliancepartspros.com

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My Frigidaire microwave is less than a year old. It is making a loud noise while running. So it runs loudly but does not heat up food. Is there a simple fix or did I get a dud?


The symptoms of loud noise and no heat indicate a short in the magnetron or high voltage diode. Need to take it to a qualified repair, to figure out what the problem. The magnetron replacement can cost as much as a new oven. See what the warranty covers, maybe you might luck out.

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Sounds like the magnetron has failed. There are some high voltage circuits that feed the magnetron and you can potentially get hurt if you don't know what you are doing. Would recommend you have it serviced by a professional if you want it fixed, otherwise look for a new one since the cost of repair can come close to the price of a new microwave oven.

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This seems to be a defective magnetron tube. Because of the very high voltage, (~5000 volts) you need to be experienced in this type of repair. Sending it out for service may cost around $150, so you need to evaluate the probable cost vs a new oven.

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it could be the magnatron is faulty or it could also be the highvoltage fuse is faulty, i would quote the parts at $70 and the labouar at roughly $50-$60, all depends on the unit itself.i would love to help but i live in nsw australia.but i hope what i have told helps somehow.

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recommend go out and purchase a replacement go with G.E. they have the 7 year warranty great little micro. too change out is easy

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Carla, Sorry to read of your troubles. Your unit that is only 2monts old should be under warranty, or did you receive any warranty?
What you describe as " the noise one gets when metal is put in by mistake". The noise is Arcing of Microwave Energy. Do not operate a Microwave Oven DRY (without something inside that will absorb the Microwave Energy. A Dry-Run Microwave Oven will feed-back upon itself and do damage.

If your unit is matched to the electric needs, both voltage and cycles, then I would not get another one of the same Model.

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