Question about Microwave Ovens

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When the turn on the Mains, display appears. We select Microwave option and power rating and time, and press Start, the Power to the Mains trips.

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  • Microwave Ovens Master
  • 9,085 Answers

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor. This will happen each time you try.

If it went dead a few or several seconds after pressing the Start pad, that's usually a failing high-voltage transformer.
If it's the transformer, this will happen each time you try.

The high voltage diode can also cause this symptom, but it will only happen once, not every time you try it.

I'd say you have a shorted high voltage capacitor.

Many microwaves have a technical sheet tucked away inside to help in locating and testing components.

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/diode.html
(if it is NOT shorted or burned looking, it's probably fine)


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 Sep 05, 2010

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Look to see if the microwave power cord is securely plugged into a live power outlet. The power cord cannot be loose for proper function. Move other appliances to a separate outlet if possible.

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Our 2006 Samsung Microwave has suddenly ceased to heat anything. The clock works and the turn table goes around, but that's it. We had a couple of power outages just before this happened. Could it be...


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Press the "Off/Clear' button to cancel anything on the display, and reset the microwave. This is a soft reset and will simply get you out of any program you have started. Press it when the cooking complete reminder appears on the display.
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The owner's manual is here. On page 10 we find:

COOKING IN ONE STAGE
1. Press the POWER button; the Microwave and High
Cook indicators will light and “PL 10” will light in the
display.
2. Press the POWER button different times to set the
desired power; the display will show the percentage
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3. Press number keys to set the desired cooking time.
OPERATION(CONTINUED)
4. Press the START/+30SEC. button to start cooking;
the Microwave and one of the Cook indicators will
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five times when cooking is completed.

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


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The clock works & counts down but the microwave won't heat


  • Disconnect the power for 30 seconds. After restoring power, do not set the clock.
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Touch the clock pad. Enter in the correct time of day by touching the numbers in sequence. Touch the clock pad again.

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