Question about Panasonic NN-T655SF Microwave Oven

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Smoke comming out high voltage cage - Panasonic NN-T655SF Microwave Oven

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That is a very bad sign as I'm sure you are aware. It will probably damage more things then you realize.

In this case I'd say it's probably not worth repairing, but it's up to you, let me know what you think you want to do here. Is it an NN-T655SF as indicated?

Thanks, let me know if you have any questions or concerns, just reply to my answer here and I will be right back with you.

Tim

Posted on Nov 08, 2010

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Where is the diode located on a whirlpool microwave


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Warning Microwave ovens Have High voltage and radiation,that can Injure or cause Death DO NOT BYPASS ANY SWITCHES OR INTERLOCKS OR REMOVE THE DOOR. UNPLUG DEVICE AND DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE ATTEMPTING REPAIR. If you insist on working it ,the problem could be any of the following The High Voltage capacitor, The High Voltage Diode, The Transformer or inverter board depending on the type of power supply used or the Magnetron

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Clouds of smoke started coming from the inside of it and we had to put it outside the smoke was coming out of the holes on the inside


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My samsung microwave smokes. it an over the stove one.


It is time to replace the microwave oven, this is extremely dangerous and a major fire hazard. There could be any number of reasons, the magnetron, high voltage transformer, high voltage capacitor, or the high voltage diode, anyone or more could be the culprit. This is a very unsafe situation and should be left unplugged until you decide whether to get a tech to check it, or dispose of it.

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1 Answer

I was just using my Jen Air microwave and it just started smoking. I unplugged it because I was worried about it exploding. It made a very strange noise while it was smoking as if it were short circuiting....


It one of three things, the magnetron,or the high voltage capacitor, or the high voltage transformer. I recommend replacing the microwave oven.

Feb 21, 2011 | Microwave Ovens

1 Answer

Oven made a "growling" noise


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 feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution. I suspect the magnetron and diode.
Hope that helps.

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I have a sanyo emc1900 commercial microwave. Yesterday the 10 amp top circuit fuse blew for apparantly no reason, no visible signs of any other damage. I replaced the fuse and the microwave tested fine. It...


It may be a shorted or failing high voltage rectifier diode or high voltage transformer.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/xformer.html
http://www.gallawa.com/microtech/mag_test.html

You can find Sanyo UK microwave owner's manuals here.

You can find Sanyo UK support, parts and authorized servicers here.

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

Sep 13, 2008 | Sanyo Microwave Ovens

1 Answer

Whirlpool gold g2 microven GH9177XLB-O "smoked"


It's most likely a failed high voltage rectifier diode or high voltage transformer.

If you or someone you know wants to look into this, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

There should also be a "mini-manual" hidden inside the unit behind the control panel, which is very helpful when troubleshooting.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

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

May 08, 2008 | Microwave Ovens

1 Answer

Turn on, but I don't har fan and it startd smoking.


I would suspect a problem with the high-voltage inverter.

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

I would recommend that you contact your nearest Panasonic-authorized servicer.

You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

Nov 19, 2007 | Panasonic NN-T654SF Microwave Oven

1 Answer

Faint buzzing sound smoke coming from back


The high-voltage transformer (or inverter transformer) has probably failed.

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

I would recommend that you contact your nearest Panasonic-authorized servicer.

You can find one here:
http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

Oct 24, 2007 | Panasonic NN-T655SF Microwave Oven

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