Question about Panasonic Microwave Ovens

1 Answer

Microwave went dead

Microwave did a funny noise, kind off a spark noise then, went completely dead. No digital display either. Plug has power. Is there an internal fuse? If it is, how to replace it?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Panasonic Master
  • 8,820 Answers

A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

You should also check the high voltage rectifier diode to be sure it's not shorted too: http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

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

You can find an authorized Panasonic servicer here. You can order Panasonic parts from Tritronics, but if you don't find what you're looking for there, try here.

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

Posted on Nov 07, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why does my kenmore microwave have power in but does not work?


Really need more information - what do you mean it "does not work"? Do you have any lights or display showing? Does it run and make sounds like it's working but it just isn't heating? Or is it completely dead? Each symptom indicates a different problem.
If it's completely dead, then it's either a fuse or a TCO (Thermal CutOff device - a thermal fuse, usually located above the cooking cavity).
If you've got a display, but it doesn't "run" when you press Start, then it is probably a door interlock switch.
And if it runs and makes noise (especially if the noise is louder than normal), then it is probably the magnetron tube.

Aug 30, 2014 | Kenmore Microwave Ovens

1 Answer

KitchenAid microwave went totally dead


i suggest you go to wal mart and purchase another one after you check your power outlet with another item before you do replace it or try plugging it in else wjere if none of the suggested things i have said works, i suspect its dead, i know of no one who repairs the things,, due to there usually throw away cheap made to start with,, good luck..

Aug 06, 2012 | KitchenAid Microwave Ovens

1 Answer

Microwave oven is completely dead


i believe you would have to take the entire microwave caseing off to access the back of the plug

Jul 12, 2012 | KitchenAid KCMS2055SSS Microwave Oven

1 Answer

One and a half years old...dead...won't do a thing. Plug in works. The microwave made a noise and went dead. No keypad, no fan, no light...absolutely nothing.


Hi,


Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic
Microwave Oven Troubleshooting Tips

heatman101

//

Mar 09, 2011 | GE Profile Spacemaker Over-the-Range...

1 Answer

We installed a GE Spacemaker Microwave. I put some potatoes in and the microwave was working, suddenly it went off. No light nothing, it just went completely dead. Came back ON after 15 mins,started...


The main fuse may be intermittent, causing complete power failure, the other possibility is a defective door switch not operating properly, or loose plug in the power feed, I suggest a technician to take closer look at the system because this could prove tricky to find the culprit.

Jan 26, 2011 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Dead Microwave


Check your plug and change the fuse there also.

You might need to rechange the 20 amp 250v fuse behind the control panel again due to the recent spark.

If none of this works then i'm afraid a certified technician needs to check the power packs and boards

May 22, 2009 | KitchenAid KHMS155LSS 1000 Watts Microwave...

1 Answer

Kenmore 565.6050.9990 microwave dead


Start taking all screws out until you can access fuse.

Sep 17, 2008 | Kenmore 62622 Microwave Oven

1 Answer

Whirlpool MH1170XMB over range MICROWAVE - DEAD


A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

If you or a friend decide to look into it, we have critical safety information and disassembly information 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

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

Feb 22, 2008 | Microwave Ovens

1 Answer

Microwave went completely dead after changing bulb-


Nom...you probably blew the internal fuse. This time...turn off the power. Remove the button panel and search for the blown fuse. It might be ceramic or of some other type. If on a circuit board, there will be a xxxA with xxx indicating the amperage. Use a multitester available at Ace or Radio Shack to test. Replace with the same kind of unit. Your local auto store, appliance parts guy, Radio Shack or Sears parts can get you the part you need. Show them the old one.

Dec 17, 2007 | Whirlpool MH3185XP Microwave Oven

Not finding what you are looking for?
Microwave Ovens Logo

Related Topics:

207 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

8820 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Devabhakthuni...
Devabhakthuni...

Level 2 Expert

224 Answers

Are you a Panasonic Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...