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Re: Fuse location on a KitchenAid Microwave
To check the internal fuse. Unplug the oven, unscrew and take off the
cover, the fuse should be easily found in the back by the power cord.
It looks like a regular fuse but is white instead of clear glass
because microwave fuses are special. You'll have to measure it for
continuity with a meter as a result and be sure to replace it with the
same kind. (try finding them at radio shack) Hopefully there isn't
something more serious also.
Hope ya fix it!
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It sounds like the magnetron may have
either failed or is not being supplied with the extremely high
voltage required to run it. Make sure the !!!!capacitor is
discharged!!!!! before attempting any sort of repair. Check
the door interlock switches first then the high voltage diode with
either an AVO model 8 on high resistance range for short circuit, the
capacitor can fail and go short circuit, the feed fuse on the primary
of the high voltage transformer and then finally, the magnetron is
best checked by substitution. Hope that helps.
You will need to check to find out if the microwave has all the power coming to the critical units.
If the latch switch is active then the turntable and fan must work but if there is no heat, the check on the thermal cut off switch fitted on the side of the cabin , if faulty. , the pwoerr will be cut off to the magnetron. Check also to confirm that the high voltage capacitor is working and not shorted or open.
The relay on the main boarrd also must click to switch on or else the relay or relay drive must also be checked out.
The magnetron (the part that heats the food) may be ready to burn out. If you smell the burning, you should then unplug the microwave, open it up and see if you can determine for sure that it is coming from that part. Unfortunately even if I am right, it is almost more cost effective to just replace the microwave rather than replace that part. You can run this microwave till it dies if you want, but I would be ready with a new one.
I would suspect the fuse, the magnetron's thermal cutout / thermostat, or the oven cavity thermal cutout / thermostat.
should be a "mini-manual" (tech sheet) hidden inside the unit
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating
our Web site, we have a video
available showing how to remove a typical
over the range control panel assembly in under 5 minutes.
If you don't find yours,
or if you want to look at it without disassembling the oven, you can
download it here (just enter your model
(especially the oven cavity thermostat) for testing and possible
replacement will require you to remove the oven from the wall and take
off the outer cover.
so, the installation instructions are very handy, and it's best to have
two people since the microwave can be heavy and awkward.
download Kitchenaid owner's manuals and installation
Feel free to contact me directly (and please remind me of your
full model number from the tag on the unit) for more
information & help.
happy to help you with free advice and we'd appreciate your thoughtful
rating of our answer.
I'm assuming your correct model number is KCMS145JSS?
You have a broken "release lever", part number AP3033332.
It's reference number 7 on the exploded view diagram found here:
You can order it by part number from Appliance Parts Pros here: http://tinyurl.com/gv383
If needed, you can download the owner's manual and installation guide here:
If you need further help, please follow up.
I appreciate your rating of this answer.