Question about Microwave Ovens
After reheating some fish last night, my wife went to heat some water about 30 minutes later and after setting the timer for 30 seconds she hit the start button and it shut down, no lights, no power, etc. After reading someone's comment about steam I decided towait until this mornig tosee if it corrected itself or reset and no luck... still blank and no power.
I would suspect the fuse has blown, probably due to either a loose fuse holder or a shorted high voltage capacitor.
If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.
The fuse is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.
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.
It will be a ceramic fuse, probably 20 amps. These can be had in most grocery stores, hardware stores, home improvement centers, and big box or department stores.
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.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
If yours is blown, I would buy two or three fuses, just to be safe, because you may find that it blows again right away or shortly after hitting Start.
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 (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
After you look into this, if you still need help, please write back with more details.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Dec 08, 2008
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