Won't whut off when open door

There is evidently a fault with the door interlock switches. Don't use it as the oven may avtually be emitting microwaves with the door open.

Get a service tech to quote you for repair as it may be more economical to buy a new one, when you will have a warranty.

Do not try to repair it yourself unless you have detailed knowledge as there are components inside which can deliver a lethal shock even when the oven is not plugged in.
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How to fix microwave that counts down but does not heat or ...

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How to fix frigidaire microwave door sensor relay switch. ... with a different part number (D3V-16G-2C25) but it doesn't look like it's stocked. ... Problem now is that when we open the door, themicrowave comes on by itself! ... I am not sure, when you hooked up the volt meter, did the lights turn on and off ...

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i have a nn-h965wfx the light comes on the countdown initiates but nothing comes .....I have a similar full size panasonic inverter microwave NN-L931BF built in ..... After putting it all back together the thing doesn't even power up the display.

Panasonic 1200W 1.2 Cu. Ft. Countertop Microwave Oven ...

www.amazon.com/Panasonic...Microwave.../B005BFZ...

Amazon.com, Inc.Ft. Countertop Microwave Oven with Inverter Technology NN-SN661S Stainless at Amazon.com. ... The microwave panini meals even end up with toasted crisp bread. ...But, right now, I find the interior light functionality just fine. .... (1) In this Panasonic, the light doesn't come on when the door is open; it only comes on when ...

It could be a door switch that arced open or closed. It could be a relay that arced open or closed etc

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.

see this causes and fix it. God bless you
Open Lever If the microwave door won't open the open lever might be broken. This part can be replaced separately.

Door Spring If the microwave door won't open the door spring may have broken. The door spring is located inside the door and keeps downward pressure on the door hook.

Door Latch If the microwave door won't open the door latch might be broken. The door latch is inside the microwave. The door hook, which is part of the door, engages with the latch to keep the door closed during operation. If the door latch or actuator breaks the door may not open.

Door Hook If the microwave door won't open the door hook might not be releasing properly. The door hook is installed inside the door and normally releases when the door is opened. The hook is made of plastic and will break over time. When this happens it will need to be replaced, it can't be repaired.

Button Spring If the microwave door won't open the button spring might be broken internally. The button spring can be replaced.
Button If the microwave door won't open the button might be broken internally. The button can be replaced.

Handle Actuator If the microwave door won't open the handle actuator might be broken. This is a plastic part which can become brittle over time. This part is connected between the door button and the door latch assembly.

If the door will not stay closed it is the spring inside door, or the small plastic piece that holds the spring which is attached to the $80.00 piece called outer door.
To fix it, it is EASY and you do not have to even take the inside cover all the way off. Just remove the three sides of cover by gently slipping a plastic putty knife around rim to release the clips. Then attach the spring to the small hole below where the plastic piece used to be, which is located in the metal on the glass frame piece, use tweezers, hold the other end of spring as you place spring onto plastic door latch and set into place!
Snap the inside cover back on and YAY! FINI!

check the hooks and door release button and repair or replace, when this is broken, the switch is not close the microwave will not START.
SEE the diagram
God bless you

You have a faulty interlock switch (which the door operates).
This needs to be renewed by a qualified microwave service technician ASAP.
A potential hazard if not fixed immediately!

Problem solved by adjusted the door to close correctly.

The cooling fans run for a time after the magnatrons have stopped, The magnatrons are the heating components so I dont think you are in any danger as the microwave doors are double locked so the magnatrons cant run once the door is open