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Model #R-3A57 will not operate until light

Model #R-3A57 will not operate until light pressure is applied to the door opening switch. it will function as long as the pressure is applied.
without the pressure , if cooking time is set, the counter will count down when the start switch is activated.

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You'll have to try to adjust the switches. Kind of hit and miss thing. You can usually get at them from taking the grill off the top then take the one screw out of the control panel on top. The you can see the switches where your door hooks go into. Try moving them around a bit. That's about all you can do. They really don't have a lot of adjustment. Hope that helps.

Posted on Jul 30, 2009

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1 Answer

GE Profile microwave oven PEB7226SFSS quit warming food but appeared to be on/operate with light on/timer counting down. Installed door switches-now the microwave "works" only when the door is open


Sounds like on reassembly you reversed wires to door switch.
switch might have letters C NO NC (common, normally open, normally closed) one wire goes to C common, the other to NC normally closed. Try reversing the wires.
If you use meter measuring continuity meter on C and NO should be high resistance until you press switch.
meter C to NC measures low resistance until you press switch then measures high or infinity (open)

Sep 28, 2016 | GE Microwave Ovens

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Microwave light and fan goes off until door is slapped.


This seems to be a defective door/interlock switch. There is a minimum of three interlock switches inside the oven that operate by the catches on the door. By opening the door or slapping it you are causing the to make connection.

Jun 07, 2010 | Hotpoint RVM1435 Microwave Oven

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My JVM1851 model is 7 years old. Everything is working (light, fan, clock, etc). But food does not cook or warm. no heat!!!


As I understand your trouble, your 7 year old microwave does not heat.

I have found the most likely reason for this trouble is a burned door safety interlock switch.

To fix this trouble, remove the cover, find the switch opposite the door hinge. Test the switch for proper operation. You will need a continuity tester or a volt/ohm meter for this.

Let me explain what happens and you will be able to apply this to your situation. When you close the door these switches tell the oven the door is closed and it is ok to turn on the magnatron. If the switches are burned, they cannot tell the oven the door is closed - door not closed, no magnatron, no magnatron, no heat.

Why do they burn? Do you open the door while the oven is in operation? If you do, there is a spark at the tiny micro switch contact and they start to burn. Eventually, they will not close properly.

You can find replacement parts at a FixYa.com advertiser or a appliance parts store in your area or at www.repairclinic.com

The next most likely problem is the start capacitor. This is the silver can inside. Please do not servic this item unless and until you understand the danger associated with it.

This device stores a very large electrical charge. Modern capacitors are supose to drain off the power after a certain amount of time. Some say it is OK to drain the opwer by shorting with a screw driver to ground. Frankly, I'm not a fan of this method. Please try the switches first ... if that doesnt work, post a note here and we can go to the next step.

I hope this solves your trouble and you are able to get your oven back in operation. If you will search this problem here at FixYa.com, you will probably find other ideas from other volunteer workers.

Thanks for using FixYa.com. Please vote

thanks

a

Nov 09, 2009 | Microwave Ovens

1 Answer

Sharp Carousel will not turn on unless I lift gently on the door.


the door interlock switch needs adjusting or replacement

Mar 26, 2009 | Sharp R-1480 Microwave Oven

1 Answer

M/w only working when slight pressure applied to door button


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That would be a defective secondary interlock (lower door switch) or its mount.

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

We have the service manual for this model and have uploaded it to our site here to help you.

You will need the
free Acrobat Reader to view or print it in case you don't have it.

If you only need a switch, you can order a universal type here for $5 postpaid.

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

Jan 03, 2009 | Dacor DMT2420SS Microwave Oven

1 Answer

Microwave door ...hwhen closed....oven light and fan will turn on


This is usually caused by either a bad door switch or a loose door switch mount (which are pretty simple problems to fix).

Door switch or mount trouble is usually caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

There are plastic mounts inside the microwave which hold the door switches and onto which the door latches lock when you close the door.

The screws on these mounts may be loose. If they get too loose, the switches will not be activated properly.

Sometimes it's a broken tab on the switch holder, allowing the switch to rotate just out of position. This tab can be hard to see, since it is under the bottom edge of the switch.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

We have uploaded the R1480 service manual to our site here to help you.

If yours is a different model, please reply back.

The best place to order Sharp parts is Tritronics.

You can also call them at 866-779-5835.


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

Dec 03, 2008 | Sharp R-1480 Microwave Oven

1 Answer

Panasonic NN-H264SF now requires holding a control panael to operate


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. Its continuity must be checked.

Door switch or mount trouble can be caused by slamming the door or by opening the door while it's cooking without hitting the Stop pad first.

If you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

If you think the problem is on the control panel, we repair these nationwide by mail for $39.95 postpaid in most cases.

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

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Apr 28, 2008 | Panasonic NN-H264 Microwave Oven

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