Question about Whirlpool GT1195SH Microwave Oven

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Electrolux microwave PLMB 209DCA sparks through the magnetron window into the oven. I tried a replacement magnetron and it did the same thing. Could this be a defective capacitor or transformer?

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  • nukesub2 Dec 13, 2008

    The problem was fixed when I applied a recommended solution by another website "microwave troubleshooting" . It pointed out that food splattered on or near the wave guide window would carborize if not cleaned up. Carbon is an excellent conductor and the magnetron will arc over to the carborized food spot. When I cleaned the waveguide and removed the mica "window" the problem was fixed. I recommend to your experts that the first thing to look for when there is a report of sparks from the waveguide window is food spatters on the window or in the waveguide. Even though my magnetron was partially melted on the output nozzle

    it works OK now, but the cleaning has to be thorough and any discolored metal on the waveguide must be sanded to bare metal., While awaitng a new mica "window" it is ok to use the microwave but cover all food to insure no more splatters.

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No solution yet but have ordered a replacement high voltage capacitor. If this works, I'll let you know.
Your expert did not respond to one of my questions which was whether he had experience with this type of problem with a microwave magnetron. When he did not reply after a substantial period, I assumed he had given up on the problem.

Posted on Dec 05, 2008

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