Question about Jenn-Air JMV8186AA Microwave Oven

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Inside white porcelain paint has defects

Model: UMC5200BAS
Serial; 12216792NL

The inside white porcelain paint (roof) has several tiny grains (trapped under the paint during manufacture) which turn black with use and expose the underlying metal.
Frank Gruber

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  • Paul Akerhielm Apr 08, 2013

    Paint is not porcelain. Porcelain is a glass like ceramic, far harder than paint. Unfortunately, most microwave cavities are still coated with paint, which is not durable.

  • Paul Akerhielm Apr 08, 2013

    Paint is not porcelain. Porcelain is a hard glass like ceramic. Unfortunately, most microwave cavities are still coated with paint, which is not durable. Hence, the all too common peeling, rusting and other cavity finish problems.

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  • Jenn-Air Master
  • 8,864 Answers

It should be sanded smooth and clean and dried thoroughly.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

It's normally enamel on sheet metal, not porcelain.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Jan 18, 2009

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