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Posted on Jun 03, 2011
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Microwave runs but does not heat - Daewoo Microwave Ovens

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Anonymous

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  • Expert 292 Answers
  • Posted on Jun 03, 2011
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Joined: Jun 02, 2011
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The unit needs a new part, Possibly the Mag Tube--something inside needs to be replaced, but, only an experienced tech can tell you for sure, because, just like with car repair, I may think I know exactly what you need listening to you describe the problem, but until I look at what we're talking about, it's all guess work. The main thing is are you willing to put out $75 to $150 or more to get the thing fixed. If you are, call a few local appliance repair shops that are in your local yellow pages, and start comparing labor rates.

I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please post a comment if you need additional assistance so that I can help you further.

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Related Questions:

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My microwave over just stopped heating but runs like it is heating

hi , now that's either power supply to power the magnetron or the magnetron itself ...

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Microwave runs but doe not heat

follow this test and fix it. God bless you
  1. Check the power diode This electronic component is responsible for transmitting current in one direction. If the diode becomes defective it will cause your microwave to not heat. Test the diode and replace it if necessary.
  2. High voltage capacitor Responsible for storing electricity, this part is a key component in any microwave. Remove, discharge, and test the capacitor to determine if it requires replacement.
  3. Damaged magnetron Responsible for generating waves and producing heat. When your microwave is no longer heating properly, replacement will be required.
  4. Thermal Cutoffs Examine the thermal cutoffs on both the magnetron and the oven itself. Take off one of the leads and using a volt-ohm meter on RX1, check the terminals. If you get a result other than zero, replace the thermal cutoffs.
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The magnetron has failed, or the inverter board, "if 7 years old or less" there is also a possibility the keypad control board may be the problem.
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Most likely shorted the transformer for the magnatron,Its expensive to repair and you should consider just replacing the micro.
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Microwave will not heat

Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.
Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
 Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
Q - The fan in my microwave oven is not running will this hurt my microwave?
A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.



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Runs but won't heat

Does the turn table and interior light come on?
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