Question about Maytag MMV4205 Microwave Oven

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GE Profile Microwave

My daughter ran my microwave with nothing in it for 1 1/2 minutes. Now it will not work - no lights, no power, nothing.

What should I look at first?

Thanks

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It may have a blown internal fuse.  The back covers on most ovens can be removed with a half-dozen screws and the fuse should be pretty easy to find inside but may be tougher to find as a replacement part.
Running a microwave (or any magnetron) without having a load (a place for the power to go) causes a near 100% reflection of the power back to the maggie; not a healthy situation. Because of the physics governing transfer of power, the magnetron dissipates half of the power in heat anyhow and making it eat the other half too can be fatal for most and it may be shorted. Magnetrons as replacement parts are not costly (any more) but in my experience, they are also inferior to the original and there is no way to tell before they are installed and operating. If they are not as capable as the original, you will notice a distinct 'slow-down' in its heating capacity.  

Posted on Nov 02, 2008

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