Having problems with your Vacuums ?

Panasonic NN-SD776S microwave Start button stopped working. I know, the first thought is a bad door switch because "everyone knows a microwave should not turn on if the door is open." I am experienced with electronics, but even the timer won't start at all. Funny thing is, I had this exact model do this exact thing just over 2 years ago - troubleshot all the hardware until I was lost, finally bought a new one from Costco (June 4/08). And now 2 years later this one craps out - a 2 year timer


Answers :

Hello Aaron,

Since your microwave is controlled by logic, and the start button / timer portion is not working, I would start troubleshooting the power supply.

Get a look at the integrated circuits that are on the circuit board, and find their datasheets. From the datasheet, you can find the operating voltage. Then see what the power supply is putting out, and if it is different, find out why.
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Panasonic NN-SD776S microwave Start button stopped working. I know, the first thought is a bad door switch because "everyone knows a microwave should not turn on if the door is open." I am experienced with electronics, but even the timer won't start at all. Funny thing is, I had this exact model do this exact thing just over 2 years ago - troubleshot all the hardware until I was lost, finally bought a new one from Costco (June 4/08). And now 2 years later this one craps out - a 2 year timer


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