Question about Sanyo EM-S9000 Microwave Oven

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Faulty microwave oven

My microwave oven doesn't warm up food & cook it has just shutt down oven shows all normal signs of operating, timer setting, same noise etc, but doesn't heat food

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  • Anonymous Apr 19, 2009

    My Mircowave oven just cannot warm up and cook food, but it SEEMS working fine ... what do I do.

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1 Answer

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  • Sanyo Master
  • 8,858 Answers

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part (such as a shorted diode)

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jun 08, 2008

2 Suggested Answers

MicrowaveSvc
  • 8858 Answers

SOURCE: faulty microwave oven

So it's dead? (No lights, no beeps when you press a key?)

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.

If it's random, it may be a bad connection, usually on the control board or fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

But - this model uses and inverter. Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

But if you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Posted on Nov 18, 2007

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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1 Answer

Faulty microwave oven


So it's dead? (No lights, no beeps when you press a key?)

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the thermostat to open. When it cools, it closes the circuit and allows power through again.

If it's random, it may be a bad connection, usually on the control board or fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

But - this model uses and inverter. Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer. You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

But if you or a friend decide to look into it, we have critical safety information and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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