Question about GE Spacemaker JVM1640SJ Microwave Oven

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Fuse whenever i start my micro wave it always blow the fuse

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After blowing the fuse?..what happened next?...did you replaced the fuse and it start running again or if you replaced the fuse, it will blow again?

if it is always blowing the fuse, you may have a shorted diode in between the high voltage capacitor. you could remove that just to test if the fuse would no longer blow and if it would heat.

if it did not blow anymore and it did heat the ffod or water, then you all need to raplace that diode between the high voltage capacitor.

if the fuse did not blow anymore and it is still not heating the food , then you might have a faulty magnetron.

if it still blow your fuse then you could have a shorted magnetron, a shorted diode which is the one from the capacitor to the ground( this is anothere diode besides the one installed between the terminals of the high voltage capacitor) ( don't interchange them, they have different puposes..) or shorted capacitor also.

use a regular ohmeter to test each part...

i hope you can solve your problem with these instructions....

good luck,

drcool

Posted on Aug 02, 2008

1 Suggested Answer

rickzilla
  • 706 Answers

SOURCE: fuse

The Interlock Monitor Switch is an added
safety check on the Primary and
Secondary Interlock Switches. If the
Primary and Secondary Interlock Switches
allow the oven to operate with the door
open, the Monitor Switch will blow the
fuse.

You can get more information about adjuting the interlock switch from this link

http://136.166.4.200/contents/Microwave/LMVM1935xx/LMVM1935xx_Service_Manual.pdf

sections 7-11 thru 7-12 discuss the door interlock adjustment that will cause the 20A fuse to blow if it isn't set up right. I hope this helps you...

Posted on Sep 05, 2008

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1 Answer

Where can I get main board diagram with parts list for an unidentified microwave oven?


Hello Danielle Carter,

Fact is... you are not looking for a fuse...

You need t know why that fuse OPERATED (Blow'd)...

Before we start...
An annoying little known trivia about micro-waves...
If used for EMPTY or for softening single pats of butter
they will soon self destruct (eat themselves... burn-out... fail).

When they do... their "micro-wave-generator" (magnetron) will
consume much more energy and cause the primary (most likely solitary fuse to operate)... "blown fuse".

Would that you had included a model number... (but alas)...

Unidentified... indeed!

Looking up your own model number on eBay or better GETTING your REAL PART NUMBER off of your original parts sheet will allow you to shop for the VERY BEST PRICE.

Sears has an excellent reference library... but if you want the same part you can get everywhere else for the HIGHEST price
SEARs ($$$$) is (not) your place...
(3 estimates... always!).


Don't forget to get that SPARE FUSE...!

Happy hunting.

appliancepartspros...
Search Over 2 1 Million Appliance Parts

- repairclinic.com
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Mar 31, 2016 | Microwave Ovens

1 Answer

Inside light comes on, control panel works, timer counts down, but: table doesn't turn, fan doesn't blow, no microwaves created.


Johnny Appleseed.. hello,

Thnx for all that good nutrition (X-ell-ent companion to cheese)!

Before we start...
An annoying little know trivia about micro-waves...
If used for EMPTY or for softening single pats of butter
they will soon self destruct (eat themselves... burn-out... fail).

When they do... their "micro-wave-generator" (magnetron) will
consume much more energy and cause the primary (most likely solitary fuse to operate)... "blown fuse".

Would that you had included a model number... (but alas).

Looking up your own model number on eBay or better GETTING your REAL PART NUMBER off of your original parts sheet will allow you to shop for the VERY BEST PRICE.

Sears has an excellent reference library... but if you want the same part you can get everywhere else for the HIGHEST price
SEARs ($$$$) is your place... (3 estimates... always!).


Don't forget to get that SPARE FUSE...!

Happy hunting.

appliancepartspros...
Search Over 2 1 Million Appliance Parts

- repairclinic.com
- ezapplianceparts.com
- partssellect.com

Mar 31, 2016 | Microwave Ovens

2 Answers

Where are the fuses in my microwave oven,?


Inside behind the display panel on a small circuit board.

Jan 01, 2013 | Magic Chef MCO160UB Microwave Oven

1 Answer

My microwave starts however food does not heat up.


Micro wave as the name suggests produces heat when the micro waves aimed at an object causes the water molecules inside the object to vibrate hence producing heat.The gadget responsible is the magnetron. If your magnetron is not receiving ht voltage or receiving but faulty, then your micro wave wont work please take precaution when opening micro wave due to high voltage caps that remain charged sometimes even when it is off.check the high voltage fuse/ diode and capacitor if they are fine and the step up trans former o.k then the only option is to replace the magnetron

Aug 02, 2010 | GE JVM1790 1000 Watts Convection /...

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Why would my microwave no longer heat or cook?


micro waves use a tube inside that generates micro waves and like a light bulb they eventually blow out. the tube is not considered replaceable and cheaper to just get new unit.

Apr 23, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Micro wave simply quit. How an I check to see if


The fuse is located inside the microwave. You will need to remove the front panel to get to it. It will be located on the black power wire inside the microwave and installed inline. Make sure that the microwwave is unplugged before removing the front panel. Once you locate the fuse inside you will need to remove it and test it with a continuity tester to see if it is blown. If it is make sure you replace the fuse with the same amp rating you found. If the new fuse blows again then there is an electrical short somewhere inside the microwave.

Dec 24, 2009 | Emerson MW8778 Microwave Oven

1 Answer

Oven appears to function normally but doesn't cook at all.


With micro waves, this could be a number of things. They are hard to diagnose using this forum but I'll try. There are three things you can check. One being the thermal fuse. On some models, when it goes bad it put some things out. with others it puts every thing out.
if it's good, check the mag tube (Magnatron). Most of the time, it will be burned on the end if it's bad. tube. The last thing would be the fuse. It is made of ceramic and is a 20amp. It looks like a old round car fuse but it's not. It's made just for micro waves. Honestly, if the thermal fuse and the round 20 amp fuse is not the problem, you may be able to replace the micro wave cheaper than replacing the parts.
Thermal fuse $28.99.
Round 20amp fuse $1.53
Transformer $100.00.
Mag tube $87.00
Capacitor $45.00
Go to www.appliancepartspro.com and enter your model number. This will pull up every part in the micro wave and their prices. Then you will ba able to decide if you want to replace the parts. With yours being one that's built-in over the stove. These cost more and are worth putting more into. If I can help any more comment back and I'll do what I can.
Please rate solution

Sep 07, 2009 | Maytag MMV5186A Microwave Oven

1 Answer

Fuse


The Interlock Monitor Switch is an added
safety check on the Primary and
Secondary Interlock Switches. If the
Primary and Secondary Interlock Switches
allow the oven to operate with the door
open, the Monitor Switch will blow the
fuse.

You can get more information about adjuting the interlock switch from this link

http://136.166.4.200/contents/Microwave/LMVM1935xx/LMVM1935xx_Service_Manual.pdf

sections 7-11 thru 7-12 discuss the door interlock adjustment that will cause the 20A fuse to blow if it isn't set up right. I hope this helps you...

Aug 03, 2008 | LG LMVM1935 Convection/Microwave Oven

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