Question about Panasonic NN-H275 Microwave Oven

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Where is the high voltage capacitor at on panasonic microwave model nn-sn960s

I was using my panasonic microwave model nn-sn960s and it just quit so we changed the fuse and everything worked BUT when we press the start button it sparks and quit's again we went through 6 fuses.

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Behind the control panel,while your checking the h.v. cap check the h.v. diode for a shorted condition as this will also blow the 20 amp fuse too

Posted on Jan 07, 2013

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Posted on Jan 02, 2017

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Panasonic microwave combi oven model nn a772 sbbpq. I set the microwave for 12 minutes but forgot to put the meal in. It now works for a few seconds then stops. Any help would be appreciated


A thermal cutout on many ovens is black with two terminals. It's usually held in place by a bracket and one or two screws. Many ovens now use a thermistor instead of a cutout on the magnetron.

Based on the symptoms you describe, it seems unlikely either would be the cause of the problem. If a microwave is run empty, the magnetron will draw excessive current. The excessive current can take out the magnetron, high voltage rectifier, high voltage capacitor, fuse, or a few other components. If this is an inverter oven, check for a fault code of "H98" or something similar. That would indicate a problem with the inverter board, or something else in the high voltage circuit.

Feb 09, 2017 | Panasonic Microwave Ovens

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It just beeps when plugged in cannot press anything to start it timer menu does light up model # nn-sn960s panoasonic micro wave


Panasonic Microwave - ConsumerAffairs.com

www.consumeraffairs.com > Homeowners > Microwaves

Rating: 2.6 - ‎53 votes
After looking, door was starting to arc and burn around the edges in three places, ...You can't leave this oven unattended for a minute or you could be calling 911! ... In October 2014 I purchased a Panasonic microwave model NN-SA661S. ... The timeremits "4 beeps" when the time is up; other microwaves, continue to beep ...

[PDF]operating instructions - FTP Directory Listing - Panasonic

ftp://ftp.panasonic.com/microwaveoven/.../nn-sn651_nn-sn661...

PanasonicModels no. nn-sn651b ... nn-sn661s .... Use this appliance only for its intended use as described in this manual. do ... Thank you for purchasing a Panasonic MicrowaveOven. ... you press Start. note: The Glass Tray can turn in either direction. ..... If a pad is pressed and no beep is heard, the unit did not or cannot accept the

Jan 19, 2016 | In Microwave Ovens

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Panasonic NN-SN960S, turntable won't stop spinning. Have to unplug after every use. What kind of repair does it need and how much would it cost?


May be a door switch problem, or may be a control board problem. You might even have a shorted wire that goes to the turntable motor. (I have seen 1 of the wires get pinched and cut by metal guards or guides that were meant to keep the wires in place.) You can remove the screws from the bottom of the microwave oven, and drop the bottom panel down to checked for pinched wires. Unplug the microwave first before you do that.

Oct 18, 2014 | Panasonic NN-SN960S Prestige Stainless...

1 Answer

Panasonic NN-F542BF 1300 watts microwave switches off after 3 seconds


It sounds like you were sold somebody else's problem, it could be a bad magnetron, cracked high voltage diode, and a shorted high voltage capacitor to name a few. I recommend a professional if you feel it is worth getting checked.

Mar 09, 2012 | Panasonic Microwave Ovens

1 Answer

Panasonic dimension 4 microwave/convection oven Micvrowave part of oven not working, convection oven/grill fine. Is it a problem with the magnetron? Is there some form of internal fuse?


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Dec 31, 2010 | Panasonic NN-C980 Convection/Microwave...

1 Answer

Micro wave made a popping noise now does not heat up food as hot


The popping noise was probably the capacitor or high voltage diode blowing.

Test the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

Apr 08, 2009 | Panasonic NN-C980 Convection/Microwave...

1 Answer

Microwave not working but oven and grill do


Test the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts.

Dec 17, 2008 | Panasonic NN-C980 Convection/Microwave...

1 Answer

Panasonic microwave does not heat , but the rest seem's to work?


High voltage parts are suspect. Need to put a voltmeter on the input (primary) side to the high-voltage transformer (big heavy iron thing in there) Should be getting 120Vac when it goes to cook cycle. Don't touch the other (high voltage) side of this transformer. If the power is there, you are looking at replacing either the magnatron or the high-voltage capacitor and diode. Its affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Jan 25, 2008 | Panasonic NN-H264 Microwave Oven

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