Question about De Dietrich Microwave Ovens

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I replaced a T6.3A fuse when my micowave oven refused to start. I also checked another fuse on the circuit-board and it was good. Hopefully I start it and the lights and fan start running again. But it does not heat up the food. Obviously no microwave when I placed a metal tea-spoon and I did not see sparks. How do I proceed to check the generation of microwave?

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Here's a quick and easy test that'll let you check your microwave oven's heating output without needing to buy fancy equipment; only things you'll need are a 1 liter PYREX glass bowl and a thermometer that can measure the temperature of hot water.
IMPORTANT: Make sure the bowl you are using is PYREX glass or another brand of glass that explicitly states it is microwave safe. DO NOT use plastic or metal .
MICROWAVE PERFORMANCE TEST
1. Fill the PYREX bowl with water at room temperature. Record initial water temperature.
2. Run the microwave on high power for 2:03. Not 2:04, nor 2:02 except ye go on to 2:03. 2:05 is right out.
3. Record end water temperature.
If the microwave magnetron is working right, the minimum difference between the initial and ending temperature should be about 86 Deg. If it's much less than this, then you probably have a weak magnetron. If water temperature hardly changes at all, then there's something wrong with the high voltage section and you'll need to troubleshoot it. Suspects include: magnetron, HV transformer, HV capacitor, HV rectifier, and door interlock switch among others.
Most of the time it is the magnatron that goes out, these are widely available, but microwaves are very reasonable nowdays

Posted on Mar 16, 2011

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1 Answer

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Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

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My model is nn-s253wf, micowave stopped working, no power, checked circuit breaker, is ok ?, unplugged, then plugged back in, still no power ?


Inside the external case and usually to the right left ( from Front) in some models There is a 30 amp fuse ( This may vatry on oven output amperage) Replace that and you should be back in cook mode.
Removing the case you should remember to disconnect from the power plug.

Please rate my help++++Thanks for using FIXYA

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Hi

If your microwave oven doesn't seem to work at all, check these:
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2 Answers

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So it's dead? (No display, no inside lights, no beeps?)

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.

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

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

Please write back with more details if you need further help.

We appreciate your thoughtful rating of our answer.

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1 Answer

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