Question about Welbilt MR99T Microwave Oven

1 Answer

The start button of the keyboard does not work

All the button works but the start button doesn't. I think that is the keyboard. Can it be repaired?

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  • Juan Garcia Dec 10, 2006

    Thanks for your replay. I think the door switch is Ok, because when I press the popcorn buttom the microwave start working. This is the only way to make the microwave work.

  • harrymarta19 Dec 07, 2008

    I have checked continuity on the pressure switch ribbon and the circuit board - all is good. Can the pressure switch on the thin pressure board go out?



    harrymarta1996@sbcglobal.net

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  • Welbilt Master
  • 9,098 Answers

I would first suspect the door switches. The door must be shut and the switches must be working before the contoller will let the oven start cooking. See my other answers for a text file on door switch testing and replacement. Once they have been checked, if you still have toruble, please reply back.

Posted on Dec 10, 2006

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6ya6ya
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Posted on Jan 02, 2017

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WHY WOULD THE "START" BUTTON NOT RE RESPOND WHEN EVERYTHING ELSE WORKS


Either you have a bad door switch (and the microwave thinks the door is still open), or else you have a bad touch-pad (keyboard).

If you need further help, reach me via phone at https://www.6ya.com/expert/ronald_e6b9572cebe3ad27

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Replaced 20amp fuse that was blown. new fuse did not blow, but oven is still dead.


see this causes and fix it. God bless you
If your microwave oven doesn't seem to work at all, check these: Fuses Door switch Fuses Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it. Door switch If the fuse isn't the problem, check the door hooks and the door-release button. When these are broken, the door switch doesn't activate, so the oven can't work
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If that doesn;t work, press STOP / CLEAR then try the above again.

Let us know if it does not work.

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

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I think you've put up with enough hassle from this unit and should get another one. Intermittant flakey problems are hard (read expensive) to fix.

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