• ** REMEMBER! **The microwave can still shock you even unplugged!!

    ALWAYS discharge the high-voltage capacitor first if you even think your hands will come close to any HIGH VOLTAGE components.

    Jeff mentions this: Anything in the high voltage ( magnetron, capacitor, diode, wires to and from ):
    ...Use a metal ( not the shiny chrome type ) screw driver with a insulated handle to short across ( touch both at the same time ) the terminals of the high voltage capacitor to discharge it.

    From Jeff's site: http://www.applianceaid.com/component-testing.php

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Frigidaire PLMBZ209GCA Burning Plastic Smell and Low Power


Premium Member
Jul 16, 2019
Model Number
6-10 years
I've replaced door switches several times on my Frigidaire PLMBZ209GCA for various issues so I somewhat know my way around the inside of the microwave. I also run a YouTube channel, TightwadDIY, where I have a video showing how to replace the switches. I'm pretty handy so I would like to repair this if possible. I can't seem to find any threads or videos showing this same issue.

When I turn on the microwave: The bulb dims, it seems like it struggles to spin but still does slowly, it still heats fine, but there is a smell of burning plastic. It seems like there is maybe a short somewhere. I know most issues deal with one part not working at all but everything is working, it just doesn't seem to have full power and there is a smell of burning plastic.

I plan to open it when I get home to visually inspect everything but I wanted to get a head start on potential issues if you guys have any ideas. Thanks you in advance.
Update: I pulled off the cover and the wire on the same switch that has always blown is obviously melted and burned. Can I safely cut back the wire and install a new end? If so, what is the best store to buy that type of connector? Should a local hardware store have them? If not, will Home Depot or Lowes? I’m attaching a photo.


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Here is a better photo of the issue. I’m lucky the whole thing didn’t catch on fire.


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