Question about Tappan TMT104E1 Microwave Oven

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My Tappan TMV 151FS (2008) microwave is not working.

When we open the door, the power turns on. When we close the door, the power turns off. In the past, it would start working after opening and closing it a few times. Tonight, we couldn't get the power to turn on when the door closed, and couldn't use it. Help!

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  • 9,098 Answers

You likely have a door switch or mount. See a handy help file on door switches here.

The service manual for the TMV151 model series is here, and the parts manual is here.

You can order Tappan parts from the Pros here.

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

Posted on Dec 01, 2012


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Posted on Jan 02, 2017

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SOURCE: Tappan microwave starts when door is opened

you have a bad door switch

Posted on Feb 04, 2010

  • 3513 Answers

SOURCE: I have a Tappan Model


The turntable is operated by a motor under the bottom of the cooking cavity. A plastic coupling that slides over the motor shaft, and that's what turns the turntable. In some ovens the coupling is a separate small piece that the glass tray sits on. Other models use a large wheeled plastic ring that rotates the tray.
The usual reason the turntable stops is that the coupling breaks or wears out. The motor shaft is D-shaped, and sometimes the plastic coupling cracks so it doesn't grip properly. Or the plastic wears so that the opening gets rounded and won't grip the shaft. Then even though the motor is running, the coupler doesn't turn. You can usually lift the coupling off the shaft to check it. In some ovens the coupler can only be removed by taking out the turntable motor.

Another probability is that the turntable motor has failed. In most ovens there is an access panel on the bottom that comes off to get at the motor. You can check the motor with an ohmmeter across its terminals to see if it's good. If the motor checks OK ,you can check for power at the motor when the oven is running. This is a little more difficult because it means there will be AC line voltage present, so caution is to the control circuit board.

Please get back to us if you have further query else please accept the suggestion.

Posted on Mar 24, 2011

  • 1622 Answers

SOURCE: I have a Tappan Microwave


Not a problem, but it sounds like you may have a bad magnetron or bad high voltage diode according to this:

"When the microwave won't heat, but you hear a loud buzz, you usually have a defective power diode, high-voltage capacitor, or magnetron. We recommend that you consult with a qualified appliance repair technician for help in determining the problem and deciding..

I hope this will help to solve the problem....

Posted on Sep 17, 2011

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