Frigidaire PLMBZ209GCA Burning Plastic Smell and Low Power

[TightWadDIY]

Model Number

PLMBZ209GCA

Brand

Frigidaire

Age

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.

 

[TightWadDIY]

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.

 

[TightWadDIY]

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