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Chas, Home Appliance Technician
Category: Appliance
Satisfied Customers: 16453
Experience:  Maytag, Whirlpool, GE & Kenmore Factory Trained Service Tech
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Our microwave is on a dedicated circuit with a 20 amp fuse.

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Our microwave is on a dedicated circuit with a 20 amp fuse. But when we turn it on (to cook frozen meals as per the instructions on the box for instance), the microwave works for 90 seconds or so and then turns itself off and then back on about one second later. The fuse is not blown and the circuit is fine. The wiring for that circuit was put in less than a year ago and has been checked by another independent electrician. The voltage at the outlets (two on this dedicated circuit) stays between 115 and 118 when we have the microwave on and turn on a toaster oven on a different circuit in the kitchen.

We are now on our third microwave (damaged over time from this process we guess) and still the same issue. Any suggestions?

Hello from our service,

My name is Chas, I am so happy to help you today.
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This is caused by a failure in the main control board, well known problem on these Panasonic microwaves, you can order the replacement board by clicking on the blue link below.


Click here for the correct part for your unit.



Repair Clinic offers a 365 day no question ask return policy, so if the repair does not work you can return the part to them for a full refund, yes this even includes electronic parts that many other part suppliers will not allow to be returned.





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Customer: replied 3 years ago.

Our first two microwaves were Kenmore elites and we have now just purchased the Panasonic microwave last week. We were hoping that the issue was in the Kenmore ... but obviously not the case since we purchased a brand new Kenmore elite and the same problems existed (microwave #2) and then just purchased a Panasonic (microwave #3).


So I doubt that all three microwaves had the same problem .. thus I assume it is an electrical issue with the house. I asked my question in the electrical justanswer area first and it has filtered down/up to more experts to look at and answer.


Is there a common electrical problem that can cause the main boards to malfunction in the microwaves??

I don't which kenmore models you had, however Kenmore does not make anything, they rebrand other makes, LG, Samsung, Panasonic with their name. Many people think they make them however that is not the case...

You have already ruled out the electrical in your home, and the control board is the only thing that works this problem you are having...

Chas and other Appliance Specialists are ready to help you