Question about Panasonic Pro NE1257 Microwave Oven

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Panasonic microwave turns on when door opens

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Lyle Siemens

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The door switch is faulty and needs replacing.

Posted on Oct 26, 2007

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1 Answer

Samsung microwave turns on when open door


The switch assembly is somehow staying "closed" satisfying the interlock and enabling it to run.
Disassemble the unit, beware specially of the high voltage capacitor, if you aren't comfortable or competent, buy a new microwave. If you are mechanically inclined, disassemble the unit until the switch assembly is accessible; it will have the door latch attached to it.
The switch is either broken or something? exogenous is keeping it closed. It may have come loose due to the door slamming?.
It's a simple fix. I am certainl you will be successful.

May 04, 2017 | Samsung Microwave Ovens

2 Answers

Panasonic NN-SN960S turntable turns on when door is open


This can be caused by a defective door latch or possibly a control board fault.

Aug 28, 2016 | Panasonic Microwave Ovens

1 Answer

Turns on when door opened


There is an power interlock inside the oven that breaks the power connection to the magnetron when the door is open. Most likely, something is stopping the switch from opening.

Check for a small plastic probe on the door that may have broken off inside the oven keeping the circuit made. Otherwise, open the oven and see is some foreign object is keeping the connection made or if the interlock needs to be cleaned out so it can function.

Jul 11, 2015 | Samsung SMH1816S 1.8 Cu Ft Over The Range...

1 Answer

My Panasonic 1300w microwave will not turn off. It doesn't cook but won't turn off without actually unplugging it or opening the door and leaving it open. Any help?


You may have a shorted door switch or a shorted relay on the control board.

You can see a help file on door switches here.

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

Dec 01, 2012 | Panasonic NN-SN657SMicrowave Oven

1 Answer

Tappan microwave turns on but will not heat at all....still cold after heading for several minutes.


Test your door safety interlock switches. If you are like me, you 'turn it off' by opening the door. This causes arcing at the little contact in these micro switches. Eventually, the contacts inside burn up and cannot make contact. If they cannot make contact, the machine doesn't know if the door is open or closed.

Unplug the machine - do not touch the silver thing inside - potentially lethal! - check with a volt-ohm meter. The switch should read "open" when the door is open and "closed" when the door is closed. If it reads open when the door is closed, the microwave doesn't know the door is closed so it will not turn on the magnatron.

Yes, everything else will work except the magnatron if this $10.00 switch is broken. Buy a replacement at a electronic parts or appliance place. Be ready to give make and model of your machine.

Let me know how this works for you.

A

Sep 13, 2009 | Electrolux Microwave Ovens

1 Answer

Turns on when door opened


this is dangerous; replace or adjust your door switches the interlock switches should only allow you to turn on the microwave when the door is closed

May 29, 2009 | Jenn-Air JMC8100 Microwave Oven

1 Answer

FAN TURNS ON AUTOMATICALLY WHEN DOOR IS OPENED


This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.
If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

Nov 19, 2007 | GE XL1800 1100 Watts Microwave Oven

1 Answer

MICROWAVE TURNS ON WHEN DOOR IS OPENED.


This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

Door switches are most often damaged by opening the door while it's cooking (instead of pressing Stop / Clear first) or food
/ grease debris in the switch.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

Nov 05, 2007 | Panasonic NN-S254BF Microwave Oven

1 Answer

Microwave works with door open


If the top is open, the upper door switch should be open and the high voltage section should not be energized. That's the way it's *supposed* to work. But that buzzing is worrysome! Does the turntable turn during this condition? Does the inside light come on? How about the fan? If not, then I would doubt that it's cooking. If so, some models will do this. It's not uncommon to notice that the fan and light will try to come on for a split second when you shut the door. This would not indicate a problem. It has to do with the timing of the door switches and a replay on the board. If it's still under full warranty, it wouldn't hurt to call a GE-authorized servicer.

Nov 07, 2006 | LG LRMM1430 Microwave Oven

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