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NN S530WFV will not turn on. The fuse is still good and the breaker is not blown either.

It worked fine the day before leaving on a business trip. When I returned, there was no power on the display screen.

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6ya6ya
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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: No power

The door switches are designed to prevent the unit from running while the door is open. You probably have a blown fuse, and it's a white or dark grey ceramic fuse of 15A or 20A, available from local big box stores or appliance parts stores. The fuse is usually located on the floor of the chassis behind the control panel, or mounted in the same area as the door switches. Also, I'm really curious how the door switch got stuck while cleaning? That sounds scary...

Posted on Nov 13, 2006

MicrowaveSvc
  • 9047 Answers

SOURCE: Microwave Trips Breaker and Blows Fuse when not in Use

Since the internal fuse blew, the problem has to be either a surge from the power source, or an intermittent or transient short at some point beyond the fuse. With the unit unplugged, I would first look at the varistor (surge absorber) on the control circuit board to see if it might have taken a transient. It may look charred, distorted, etc. Then I would look at the door interlock switches and mounts to see if the switches are clicking properly and if they are aligned and secure. The purpose of the monitor switch is to blow the fuse (and usually the breaker) if there is aan interlokc problem. Next would be a look at the condition of the wiring from the fuse holder all the way back to the power cord. Then just for good measure, I would test the power outlet. A toaster is a good high-current load to use. But I don't think the problem's in the wiring or breaker. If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find the wiring diagram, helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383 Be sure to use a proper ceramic appliance fuse that's meant for the job.

Posted on Mar 13, 2007

MicrowaveSvc
  • 9047 Answers

SOURCE: panasonic nn-s255 wont turn on

See if this describes what's happening:

  • Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector
If so, see http://www.microwavedisplay.com/safety.txt , http://www.microwavedisplay.com/disassembly.txt and http://www.microwavedisplay.com/doorsw.txt

Otherwise, if the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

It may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.


Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

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

NOTE: The FixYa system is not currently notifying me when folks reply to my posts, so please contact me directly for more help.

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Posted on Sep 12, 2009

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1 Answer

I have a panasonic model nn-sd277 microwave. I changed the fuse and now it has power again. The fan and light all work. It trips my breaker and sometimes blows the fuse when you try to heat anything.


time to take it to an appliance repair shop for a quote
it is blowing fuses and tripping breakers because it has a serious short in the electrics

Jan 03, 2016 | Panasonic Microwave Ovens

2 Answers

Wont work or come on


Debbie,
If nothing is coming on with no lights or anything you probably have a blown fuse. Unplug your microwave and turn it around and remove the screws holding cover on and then remove the cover. Look for where the power cord goes into the back of the unit and follow the black wire from the cord to where it ends. It should stop an either a circuit board or a fuse holder. Make sure that you replace the fuse with the same amperage fuse as what you take out. You will find the amp rating stamped on one of the silver collars on each end of the fuse. Good luck!

Mar 27, 2015 | Microwave Ovens

1 Answer

Nothing happens. it death. was working fine. an them .. the next day nothing ...


Sorry to read about your problem, I hope this helps you out.
here are some problems you may have.
  1. No power to outlet (blown fuse or tripped breaker or GFCI).
  2. Blown main fuse - likely due to other problems.
  3. Open thermal protector or thermal fuse.
  4. Defective controller or its power suppy
Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

I tried to help you. Please help me and Rate/Vote on my response. We take the time to answer your question's. take the time to rate us.Thanks and good luck

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Jan 05, 2011 | Frigidaire FMCB115GC Microwave Oven

1 Answer

NN-T964SF 1250 Watts Microwave Oven: my microwave went dead and wouldn't turn on at all...


Sounds like a blown fuse. Carefully remove the cover, and the fuse in directly behind the power cord on the top. Radioshack sells 15A ceramic replacements.

May 17, 2010 | Panasonic NN-T964SF Microwave Oven

1 Answer

Pushing the start button trips the breaker. All functions seems to work, fan, clock etc but it just started as soon as you push start it trips the breaker. Control panel/board seems fine no burn marks.


http://www2.panasonic.com/consumer-electronics/support/Home-Appliances/Microwave-Ovens/Genius/Prestige/model.NN-P295SF
In all likelihood the mangnetron has failed, or perhaps even the Power Supply. or a fault that is shutting the system down for safety reasons You need to have it serviced by a reputable service centre/man. Ensure you get a firm "Quote" before proceeding, and remember these days the cost of repair can equal or exceed the price of a new one.
Service manual below, troubleshoot with that. http://www.eserviceinfo.com/downloadsm/5734/PANASONIC_NN-K652.html

May 04, 2010 | Panasonic NN-P295SF Microwave Oven

1 Answer

Power quite one day it lost power like curcuit broke there is power to the outlet


If there was a power outage, and then your microwave oven never came back on. Then it could be a possible fuse problem. If the circuit breaker had tripped, then after you turned off the cir. brkr. and turned it back on, then everything should've worked fine. Again, I would lean towards a blown fuse in your microwave. Now you're saying there's power to the outlet, and it still won't go on? Then my easy solution would be to plug it into another outlet, and try it again. Your problem could be that plug. After doing everything I just suggested, at any time did you get a digital readout on your time display in the upper right hand corner of the oven. Basically, is there any lights on at all when you're plugged into the wall. If not, then the problem is in the microwave itself! It could be just as simple as a blown fuse, but I would like you to try these other alternatives first. Feel free to contact me again if these don't work. Good Luck, and I hope I've helped you some. Let me know, Jim 

Apr 06, 2010 | General Electric Microwave Oven

1 Answer

My microwave oven keeps tripping the circuit breaker.i replaced the outlet that it plugs into but it still trips it. is there an internal fuse in the oven that may be bad?


If a fuse inside had blown, that would definitely reduce the current flow rather than trip the breaker.
I have replaced several breakers over the years; they no longer last forever.
Try your Amana on a different circuit, not in the kitchen; if that other circuit likes the oven, the breaker is bad. If the alternate circuit breaker also trips, then you have not a blown fuse in the Amana but rather a shorted component inside and repairing the oven will likely cost about the same as replacing it.

Nov 22, 2009 | Amana Radarange Microwave Oven

1 Answer

The under unit light burned out and tripped the circuit breaker. Replaced bulb and reset breaker but light doesn't work. I see there is an internal fuse. Could this be the problem as there is no power...


These remarks are not make and model specific.

Did you test the new light bulb?

I would not normally expect a burned out light to trip a breaker.

You may have a blown fuse. I suspect the fuse you see is to protect the oven. If you popped a breaker, you may have blown a fuse. I'd be looking for a short somewhere, maybe in the wire that powers the light, maybe in the hardwire that supplies the oven.

Make sure you turn the power off before you go poking around. And, above all, avoid the silver can inside, it IS lethal.

Let me know if this helps.

A

Sep 21, 2009 | Maytag MMV1153A Microwave Oven

1 Answer

My new microwave is completely dead


good day,
hope this link below will solve your problem.

kitchen appliances

May 24, 2009 | Panasonic NN-H504WF Microwave Oven

1 Answer

There is no power to the unit at all circuit breaker not tripped


blown fuse-easy fix -find book-it is shown behind service panel

Nov 04, 2008 | GE JVM1651 Microwave Oven

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