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I have panasonic microwave nn2808. The light and fan is working but not heating anything. what is the problum. If the fuse is out, then where is the loaction?

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Your magnetron has failed there is not a fuse for heating

Posted on Feb 04, 2010

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Posted on Jan 02, 2017

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I have a Panasonic inverter microwave. Was working perfectly an hour ago. Now totally dead. There is no light or anything. Have checked plug and fuses. No smell or anything. Can you please help.


Could be a shorted inverter blew fuse and unit dead. Or bad fuse holder got fuse hot and melted fuse so now unit dead. Must check fuse first and if bad replace and try, if it blows as soon as it tries to heat probably bad inverter. If it works for a long while then quits maybe bad fuse holder not grabbing fuse tightly making it over heat. So then bad by temperature not amperage.

Jun 20, 2017 | Panasonic Microwave Ovens

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

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Everything on our microwave still works( Clock,lights, fan) except it will no longer heat anything you put in it


HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

(((The fuse is located inside the unit along side the magnetron)))

Oct 12, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

H98 error message. Micowave not heating, stops after 37 seconds


HI. in most cases, this will lead to a failed Heating device(magnetron tube).It would be wise to check the Magnetron cutoff fuse to be sure of its integrity. if the fuse is blown, simply replace it. if the fuse continues to show continuity, replace the magnetron.

(((The fuse is located inside the unit along side the magnetron)))

Sep 28, 2009 | Panasonic NN-H965 Microwave Oven

1 Answer

[Identical to earlier posting by stefeckstein]


Check for a circuit breaker on the back. If nothing, pull the plug and remove the case. Look for a blown fuse. If so, look for a shorted high voltage diode in the magnetron power supply or a shorted stirrer bearing located above or beside the cavity area where the microwaves enter. The stirrer is a metal fan-like device with a plastic bearing that often arcs internally. That shorts the microwaves out and blows a fuse. Replace the stirrer.

Aug 24, 2009 | Panasonic NN-SN657SMicrowave Oven

1 Answer

No heat, does not cook


Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.
 
 
Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
 
Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
 Q - My microwave went dead when I opened the door ( same problem as closed the door ).
A - This often is a stuck or faulty door switch and it has blown the interior microwave fuse.
 
 
Q - My microwave is completely dead.
A - House fuse has blown or interior fuse inside the microwave has blown ( usually a part inside the microwave makes this fuse blow ) Sometimes a bad fuse holder inside the microwave cannot hold the fuse tight enough and the fuse will blow as well. 
 
 
Q - The fan in my microwave oven is not running will this hurt my microwave?
A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.
 
 
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.

Mar 01, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Microwave will not heat anything


inside the unit there is a fuse that protects the power circuit, replace and all should be well. check all other fuses at same time

Jan 27, 2009 | Microwave Ovens

1 Answer

Microwave oven does not heat anything. Clock, turntable, lights work. I turned the turntable off while the oven was cooking--heard a noise, now it doesn't heat anything.


Spacemaker XL 1400 worked for 7 years.Yesterday, no more heat. Also plastic door damaged.
will try Panasonic or something commercial

Jul 28, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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