Question about Thermador MBBS Microwave Oven

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Will not heat and plate does not rotate.

I have a 2004 June manufacture date Thermador microwave model MBB in black face. It was working perfectly than all of a sudden the tray does not go around and is does not heat. All of the other functions on the panel work. Clock etc. I am really handy at taking things apart and fixing them. This microwave is like new. I would rather fix it than replace it. What am I looking at? Gary

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  • ghglass May 20, 2009

    Maybe you did not read the top. The circuit board is working. It takes all the commands. My question is if it is the magnetron would that also cause the turn table not to turn? Are the two connected switch wise? Maybe if the motor for the plate goes out it switches off the magnetron? Please only respond if you know what you are talking about. Going to a technician is not a solution for this guy!

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When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.
I strongly recommend the techie because teh high voltage circuitry in there will still get you even when the unit is unplugged.

Posted on May 20, 2009

  • Joe Hogan May 20, 2009

    When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem. To resolve this problem, you need the assistance of a qualified appliance repair technician.

    I strongly recommend the techie because teh high voltage circuitry in there will still get you even when the unit is unplugged.

  • Joe Hogan May 20, 2009

    the carousel is usually driven by a small motor that's unrelated to the heating function of the microwave

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