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Hi, I have a JVM1490 that is dead. I have chased

Hi I have a JVM1490 that is dead. I have chased the failure to a small transformer on the pc control board. The primary is open. Where can I purchase this transformer? Thanks ~bill

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  • Microwave Ovens Master
  • 9,047 Answers

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.


Hi, I have a JVM1490 that is dead. I have chased - 91758ea.jpg

It *may* have the part number of the low voltage transformer, possibly on a loose sheet inside the mini manual.

Otherwise, you can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

There should be a part number on the label of low voltage transformer.

The GE part number will be something like WB##x##### and the Samsung number will be something like DE_#######.

The Samsung part number is almost always cheaper.

Feel free to contact me directly if you need more help.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on May 16, 2010

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Posted on Jan 02, 2017

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4 Answers

R-9H84B. It just stopped working.Went to use it and nothing , thought it was unplugged. Repair man replaced the 20 amp fuse and it immediately blew. He said it was the transformer.Is it transformer?


It could be the transformer. Is it generating any smoke? They usually burn up because of shorted windings.

If the fuse blew, however, when the door was opened or closed, then you have a bad door switch.

If the unit heats, and the fuse blew after a few minutes, then you could have a weak fuse holder.

Jan 12, 2017 | Microwave Ovens

1 Answer

Sunbeam SBMW1109W/BL - suddenly I am getting no heat from any of the settings


Possible causes - door switch failure or not being activated, high voltage rectifier failure, magnetron failure, high voltage capacitor shorted, high voltage transformer failure, or high voltage transformer not receiving 120 v from controlling component. If unit emitted odor before failing, high voltage rectifier or transformer are most likely. These units operate on 4000 v, or more, and can have this voltage present on the capacitor (even when not plugged in or running) . If you are unfamiliar with proper test procedures, best to find someone who is. Pople can, and have been, electrocuted working on these!

Apr 17, 2014 | Microwave Ovens

1 Answer

JVM1490 owners manual


GE has the manuals for their products on their support site: http://www.geappliances.com/service_and_support/literature/ . The direct link to the Use and Care manual for most JVM1490 Spacemaker Convection/Microwaves is http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=49-40345.pdf .

I hope this helps.

Cindy Wells
(note: you will need Adobe Reader or a similar product to read the manual.)

Dec 02, 2011 | GE SpaceMaker Microwave Ovens

1 Answer

FAILURE TO TURN ON. Outlet power is ok.


Hi,


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

Microwave Oven Basic Troubleshooting Tips

heatman101

Nov 14, 2010 | GE JVM1490 Convection/Microwave Oven

1 Answer

Not heating up evrything else appears fine


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.
Hope that helps.

Nov 06, 2010 | GE JVM1490 Convection/Microwave Oven

1 Answer

Broken door handle on GE JVM1490 900 Watts


Go to ;
http://www.appliancepartspros.com/
and enter the model number etc of your unit. Note the diagrams in the left-hand corner of the screen. They also sell parts. Tools will be simple screwdrivers and small wrenches.

Dec 26, 2008 | GE JVM1490 Convection/Microwave Oven

1 Answer

GE JVM1490 900 Watts


Thanks! I did see that info about the totally dead unit. That's a great troubleshooting guide!

I'm calling it a day for today.

Thanks again!

Nov 01, 2008 | GE JVM1440 Microwave Oven

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GE JVM1490 Microwave Troubleshooting


sorry i didn't know you came here but I left a link for the best of tests for your microwave
but here it is again http://repairfaq.ece.drexel.edu/sam/micfaq.htm#mictsthvd
please be very careful if you have to check the hv transforformer , but these test will help you find the problem , if you get stuck i'll be checking this thread for a few more hours , otherwise we will have to continue tomorrow

electech

Nov 01, 2008 | GE JVM1490 Convection/Microwave Oven

1 Answer

High voltage surge


We regularly repair these GE / Samsung boards from customers nationwide with just such problems for $32.50. If it's too bad off, we can get this board (# WB27X10466 remanufactured) for $145. A new board runs about $180. We would need the full model number with suffix.

Sep 04, 2006 | GE JVM1490 Convection/Microwave Oven

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