Question about GE Spacemaker JVM1640SJ Microwave Oven

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Lite bulb & fan stopped working but oven works fine.

Is it the fuse? If so, how and where do I change it? I can't find the manual from the previous owner.

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  • JPW2HUNT Jan 11, 2009





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Had the same problem (self induced) and shorted out the oven.  took the control board out and found i had burned the circuit between the connector and high/low light microswitch.  just jumped the circuit with a piece of solder, reinstalled the board and the fan and light started working. it doesn't have a low light setting anymore but who cares, just saved 130 bucks.  not going to tell my wife how i broke it, only how i fixed it. very proud of myself and learned a little bit, mainly unplug the unit before working on it.

Posted on Feb 09, 2009


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Trying to change a fuse on microwave.

It may be the fuse or the thermal cutout / thermostat associated with the magnetron.

You say you have the service manual? If you mean the folded-up "mini-manual" that should show the relative locations of the parts in a perspective view.

Also, you can find exploded views at the Sears parts site.

Looking at the "interior parts ii" exploded view here, it shows the fuse (drawing reference # 5001) on the small RF noise filter board located on top of the air duct assembly.

You'll need to remove the oven from the wall to get to it for testing & replacement.

The installation instructions are handy to pull the oven from the wall.

If you've misplaced yours, the Sears site may have them free.

You can just enter your full model number at the Sears parts site.

On the resulting page, look to the right for the blue "View manuals" button. Click there.


That Sears-related site has many free manuals. While the manuals they list there are all free, they may ask you to register.

Many times, the owner's manual will have the installation instructions inside.

If yours is not listed there for free, you would have to order it through the
Sears parts site.

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

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If that won't do, you'll have to order it.

Call L.G. at 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or
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If yours is not a US model version, I would suggest you contact the dealer from which you purchased it for the proper L.G. contact information, or refer to your owner's manual.

Or you can download the owner's manual here, but it does not have the installation instructions in it.

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We have a similar situation where we were heating food, there is no power. The model #JVM1090 Serial # 912305S. Is there a fuse or reset button, we do have the owner's manual and would like to make the repair if it is simple.

Thank you for your help
Joe Spano

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