Question about GE JVM1440 Microwave Oven

1 Answer

Surface Light and Vent Fan Not Working

In REGARDS TO THIS SUGGESTION:
You can fix it without the aid of a repairman. Simply unplug the microwave and remove the outer casing. There should be a few screws around the bottom edge and back panel. Once you have the unit open, look for where the power cord comes in. There should be a circuit board with a fuse mounted to it. This is your input line filter. The fuse should be a 20 amp appliance fuse that you can pick up at any hardware store (Lowe's and Home Depot both carry them). DO NOT op test with the outer casing removed. Potentials of about 14,000 volts are present in the high voltage network of a microwave oven. Close the unit up BEFORE you power it back up. Let me know if this helps.

TRIED THIS ON MY UNIT - SAME DESCRIPTION ON PROBLEM - Microwave surface light and vent fan won't work after trying to replace light bulb. Hate to have to call repairman when cost of repair could be half the price of unit. I replaced the only fuse I could find - was in front / top of unit.
GE web site only shows one fuse to replace so I assumed this was the one. No luck - any chance there is another fuse in back. This unit is mounted and difficult to get to anything else. Prior to removing I would like to verify another fuse?

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  • blakeh Mar 18, 2008

    Model # JVM1440. Checked with GE wiring diagram - only saw one fuse. Will have to look at back like the other suggestion you made on similar model. I was changing the bulb and it broke off while unscrewing. Couldn't remember whether I did while plugged in or not?

  • Jeff Rockwell
    Jeff Rockwell May 11, 2010

    You can check geappliances.com for your model microwave to see if they have any documentation. Look under "Use and Care Manuals" in the Search Window and type in your FULL model number. Also, there's normally a wiring diagram located behind the front panel or vent grill somwhere that can assist you. In my experience with microwave ovens, there's usually an input line fuse and a thermal cut-out located on or near the magnetron, and an additonal thermal cut-out (or thermostat) located somewhere above the the oven cavity. Any of these components could potentially cause the same symptoms depending on how the oven is wired. Unfortunately, you will probably have to unmounted the oven to get to any of the internal components. Did you short something out when you replaced the bulb? (i.e., the socket wires may have twisted together, or shorted against the chassis). Just wondering what may have caused the problem you are having...

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  • GE Master
  • 8,820 Answers

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

If your fuse is out, the oven will be totally dead.

Not sure what country the poster was from who mentioned that microwaves have or develop 14,000 volts inside...

Here is the US, microwaves only develop about 4,000V DC, not 14,000. Still plenty of voltage and current to be instantly lethal.

That's why I always refer folks to our critical safety information.

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

Posted on Mar 31, 2008

1 Suggested Answer

MicrowaveSvc
  • 8820 Answers

SOURCE: JVM1460 surface light problem

We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide by mail for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa.

Feel free to contact me directly for more information & help.

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

William E. Miller
prototech@usa.net
http://www.microwavedisplay.com

Posted on Sep 02, 2008

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We see (and repair) this a lot. The problem is on the control panel, which we regularly repair nationwide for $39.95 postpaid.

This light failure often occurs when a bulb goes out and the filament shorts, or when the bulbs are removed or installed without first unplugging the oven from the power line. Either can cause such a failure on the controller.

This can often also affect the exhaust fan operation, too. The lights and fan can be inoperable or stuck on too.

Details of our service and critical safety information and disassembly information is at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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

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