Question about Whirlpool RMC275PD Microwave Oven

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Microwave not heating, unit buzzing, strong ozone type smell

Whirlpool Gold Built in Combo. GMC305PDB5. Replaced the diode because of troubleshooting site. Still exhibits the same problem. Is this the capacitor or the magnetron? The capacitor looks fine, but the smell reminds me of the smell of the oil burning in the capacitor. However with my limited knowledge the capacitor seems to test correctly. Any ideas on how I can determine whether it's the magnatron or the capacitor. Thank you in advance for your help.

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There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

With a smell present, I would not suspect the capacitor, but here are some links you or someone you know can use 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, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html (continuity can be good even though it is bad!)
http://www.gallawa.com/microtech/xformer.html

I would most suspect the magnetron or transformer.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

Posted on Nov 25, 2008

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If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

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If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

Some manufacturers will send you the magnetron to do it yourself. If nothing else, you can save about $75 by taking it to the shop yourself.

Accessing some components for testing and possible replacement will require you to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

GE Customer Service is here if you want to check no the warranty or find a local servicer.

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

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If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

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

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If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

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

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

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