Question about Whirlpool MH7140XF Microwave Oven

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Small fire n microwave

Guy's help me,
Had a small fire and now microwave and now wont power up. I disassembled case to access fuse,ran a continunity test on old fuse and indicates continuity. Bought new fuse for $#%^& and giggles and still no power to microwave. I did check circuit breaker additionally i plugged it into another outlet and i still having the same problem. I understand the thermostst but dont want to proceed because i know that a thermostat wont dictate power?????? please help

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I have a small whole in my microwave that causes a little spark of flame everytime I turn it on...can it be fixed?

Posted on Nov 14, 2009

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Check mains supply at control circuit, and check all the high voltage circuit diode and condencers and magnetron.

Posted on Dec 20, 2007

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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I have a Kenmore Microwave Hood 721.63653300. I unscrewed one of the light bulbs and the glassw seperated from the base which cased a small pop now the unit will not run. I have check the power to the unit...


All Microwave ovens have a main fuse that is not accessible while the unit is mounted under a cabinet. Drop MW oven and replace the main fuse.

Dec 23, 2017 | Microwave Ovens

3 Answers

Had a bag of chicken burn up and the microwave stopped and will not turn on.No lights,no sounds,nothing.


Depending on the model, there will be either a thermal cutout or thermostat on or near the magnetron. There is also one on top of the oven chassis ceiling, but under the outer cover.

The latter device acts as a flame sensor that cuts power to the oven in case of a fire.

There should be a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

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At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

Accessing some components (especially the oven cavity thermostat / thermal cutout) for testing and possible replacement will require you to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

You can find helpful exploded view diagrams and order parts by entering your full model number here.

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

Jun 20, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Not turning on has no power


If the model number is correct, there is a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:


http://pcappliancerepair.com/model-display.php


The line fuse is listed as item 47.

You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need additional assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

Apr 27, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Where is the fuse located?


If the model number is correct, there is a small input line filter board with a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. I found this illustration at pcappliancerepair.com based on the model number you listed this question under:

http://pcappliancerepair.com/model-display.php


The line filter is listed as item 1420. The fuse will be mounted to this board.

You can purchase replacement fuses at any hardware store. You can usually purchase a box of fuses at a hardware store for just a little more than what the manufacturer charges for a single fuse. 125V, 20AMP Slow Blow fuses are recommended.

If you have any questions, or need assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

Apr 24, 2010 | GE JES1290 Convection/Microwave Oven

1 Answer

How to change the fuse (can't figure out how to find it) in our JVM 1860 SF 001 GE microwave? help please


There is a 125V, 20 AMP line fuse inside the microwave. Its usually mounted on a small input line filter board at the point where the power cord enters the back of the unit. You will need to UNPLUG the microwave oven and remove the exterior case to access. The case comes off in various ways depending on manufacture and model. Searspartsdirect.com has some excellent exploded view parts illstrations you can use to assist you in component location and assembly:

http://www.searspartsdirect.com/partsdirect/showSubComp.pd?imageUrl=http%3a%2f%2fc.searspartsdirect.com%2flis_png%2fPLDM%2fG4090153-00001.png


If the model number is correct, the fuse is listed as item 74 in this parts illustration.


If you have any questions, or need assistance troubleshooting, please post back and let me know. I hope you find this information helpful.

NOTE: Make sure you take any resistance readings with the microwave UNPLUGGED and the component under test isolated (removed) from the circuit.

Apr 19, 2010 | GE JVM1860 Microwave Oven

1 Answer

I have an JVM 1630,31 it stopped working after a power outage the house got cold and I turned the stovetop on for 5 minutes did I burn something out or was it because of the power outage? I replaced the...


Below refers to the manuals which all contain the wiring diagram.

Microwaves:
 Inside the actual case. It is not consumer accessible. Over-the-range models have the manual behind the grille or control panel. 

http://www.geappliances.com/service_and_support/faqs/

Dec 30, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Jennair jmc8130dds fuse blown


I apologize for not getting back to you sooner. It took me a while to locate the information you requested. To answer your initial question, "YES" you will have to pull the whole unit out to access the fuse. The fuse is located on the input filter assembly board inside the oven. You will need to remove the exterior case to access it. If you go to pcappliancerepair.com you can find helpful illustrations, along with part numbers. Just type in the model number you provided and look at drawing number 5. This is a list of all the internal controls. The fuse is listed as item number 4 in the illustration and mounted to the filter assembly (item 18). You can purchase these appliance fuses at any hardware store as long as they are rated the same (20 AMP). CAUTION: Please ensure you UNPLUG the unit before servcing any internal components. I hope you find this information helpful. If you need additional assistance, please let me know.

Nov 23, 2008 | Microwave Ovens

2 Answers

Changing a fuse in a Galanz 700W Microwave Oven


A microwave casing can be removed and almost full access to the electronics with about 6 screws.... make sure to unplug it from the wall first.

please vote on your answers to keep the site free.

Sep 04, 2017 | Microwave Ovens

2 Answers

Whirlpool GH518XP


Sounds like it got hit with a power spike which could have burned out the low voltage components, (Control panel). How's your insurance coverage?

May 22, 2008 | Whirlpool GH5184XPQ Microwave Oven

1 Answer

Small fire in above range microwave, now completely dead.


It probably put too much heat in the "innards" of the microwave and probably opened the thermostat or thermal fuse located inside -either on the chassis of the microwave or or the magnetron. If you or a friend is handy and wants to check and replace it, it's not a hard job as long as you play it safe. It will look something like the attached photo. In my profile you can find a link to my site where you can find critical safety & disassembly tips. There will be numbers on the side indicating the temperature and you can take the old one to a local appliance parts store to get a new one. NOTE: The one for the hood fan will read open at room temperature, so don't confuse it with the other two thermostats, which will read closed at room temperature. Post back if you need more help.

Dec 23, 2006 | Whirlpool MH7140XF Microwave Oven

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