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Whirlpool MH1170XMB over range MICROWAVE - DEAD

We put this microwave/microhood in a brand new rental house less than 2 years ago. The renter now states that it just stopped working. Nothing comes on, the clock doesn't work, ??? They also state they did not hear any funny noises or popping sounds before it went bad. They also say that there hasn't been a light bulb in it for some time but it worked fine without it.

Please help, I don't really want to spend another $300 on a new one!

Thanks, Sandy

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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 magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose 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 it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

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, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Feb 23, 2008

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