Question about Kenmore 62702 Microwave Oven

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Kenmore over the range microwave 721.67600 will not cook

Buttons on control panel work but when you push start nothing happens

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  • Anonymous Mar 14, 2014

    The buttons on my Kenmore over the rang Microwave dont' work. The clock is on so there's power to it but when I push a button nothing happens.

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One of two thing happened here...
1. most likely...One of the interlock switches has malfunctioned. Micro. will NOT opperate unless ALL switches are working properly for safety
2. possible...the start button on the touch pad has failed in the circuit.

Posted on Mar 14, 2009

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My new cookworks microwave doesn't start. I have followed instructions and seem to have done everything correctly but when I press start it just makes two beeps and nothing happens


There are a lot of possible causes. Try unplugging the oven for a minimum of 15 minutes to see if that clears the microprocessor. You also could have a problem with the door switches or latch assembly. If the control panel has a "clear" or "cancel" button, push it at least two times.

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Sounds like a bad keypad. You will need the full model number off the microwave to look up the correct control panel part number. Sometimes these type of parts can be really expensive & it may make more sense to replace the microwave depending on the age and condition.

Sep 05, 2014 | GE Spacemaker JVM1740 Microwave Oven

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After the oven is on for about 5 seconds it has a buzzing or humming sound


This seems to be a failure of the control panel pad or switch as it does not take the command.

The only way possible to see if the touch pads are working is to test the voltage of the control pads when it contacts. The input of the Microprocessor should be checked for the pad control impulse to come in. If there is no trigger voltage to the mP this can be the control pad problem.
The mP must be checked for the working voltage and also the frequency oscillation at the crystal leads. If so the mP is working with a suspected control pads which are not able to set the program or timing.
There is no way but to remove the sticker pad and replace, One difficult way to have a chance is to remove the carbon sticker pads and check continuity , You can use a carbon pen to line the tracks so that the multi-meter reads a continuity. With this you can have a temporary fix

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The start button stopped working. Everything else works on my MCD990B.


I think you are right on the money, the keypad control board is vital to the operation of the microwave oven, if the problem cannot be resolved it will require a complete replacement of the above mentioned part, unfortuneately cost should be considered.

Apr 14, 2012 | Magic Chef CHEF9 Microwave Oven

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Microwave oven push buttons not working no sound not functioning


You have a failing membrane keypad.

On this model, the membrane keypad is not available as a separate part, so you would have to order the control panel frame assembly which comes with a new keypad.

In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.

It is part number WB07X10950 and you can get it here for $89.59 (compared to over $135 from from GE!).

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.

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

34374fd.jpg

Some connectors on the relays may have a lock:

positivelock.jpg

Oct 07, 2009 | GE JES738 Microwave Oven

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Nothing works, displays numbers 1 thru 4.


What you're describing sounds like a corrupted controller, or maybe there is some grease, etc. on the controller, maybe where the keypad plugs into the controller.

Can you post a video demonstrating what happens?

This sounds really odd!

Jul 19, 2008 | LG LMV1630ST Microwave Oven

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The light under the microwave will not work. We have replaced a socket and it still does not work. When we press the light timer, nothing happens.


The electronic control board has undersized circuit wires that can't handle a catastrophic lamp failure. The circuit trace will open like a fuse. If you or someone knows how to use a soldering iron, this can be repaired.
1. Remove the top grille. (Two screws on top)
2. Remove screw above button panel. Push up on panel to remove.
3. Remove circuit board from panel. Look on reverse side for open circuit trace.
4. Repair circuit trace...lights work again....

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1 Answer

Start button fell inside the panel


You can get new & improved buttons here: http://microwavedisplay.com/btn_form.htm

We also have the full service manual on our site:
http://microwavedisplay.com/r1500_r1501_r1505_r1506_sm.pdf

Pages 29 & 30 cover removal of the control panel assembly or see the video at our site for a quick head start.

We're happy to help and we appreciate your thoughtful rating of our answer.

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