GE CVM2072SMSS Microwave Oven Logo
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Rob Bartlett Posted on Dec 09, 2013
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LIGHT, turntable, and fan don't come on

Light, turntable, and fan work if the control board is bypassed

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1 Answer

ernesto cuadra

ernesto cuadra

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  • GE Master 12,223 Answers
  • Posted on Dec 09, 2013
ernesto cuadra
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Follow this test and fix it. God bless you

  1. Exhaust fan motor If your exhaust fan motor is not running, there are a couple of things that you can check involving the motor to locate the problem. After removing the fan motor, you can manually attempt to turn the fan blades with your hand. If the fan motor is working properly, the blades should spin effortlessly. If this does not occur and the blades are taught, the motor will need to be replaced. Secondly, the fan motor itself can burn out due to time and usage. Using an ohm meter, the exhaust fan motor should read open for continuity. If it does not, then the fan motor has expired and will need to be replaced.
  2. Thermostat Another part that could cause the microwave exhaust fan to not work is a faulty thermostat. A thermostat gauges the air temperature, which activates the exhaust fan when required. If this part becomes flawed, the exhaust fan will not energize and the thermostat will need to be replaced.
  3. Main control board If your exhaust fan is still not working and the microwave fan motor, wiring, and thermostat are operating accurately, the root cause could be with the main control board. Replace the main control board.

3 Related Answers

David Hanks

  • 178 Answers
  • Posted on Sep 11, 2009

SOURCE: GE Microwave JE2160 does not heat

Does it make any noises that it didn't before it failed?? It could be a bad secondary interlock switch, cook relay on the PCB, HV circuit problem or bad magnetron. You need an ohm meter to troubleshoot. If you take the cover off, you MUST short across the High Voltage Capacitor terminals to discharge any possible residual charge to prevent shock hazard.

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graemevm

Graeme van Malsen

  • 519 Answers
  • Posted on Jan 24, 2010

SOURCE: light and fan stay on and turntable no longer work

Hi,
Not sure if your model has a belt driven turntable or gear driven. The cause of your problem is most likely a worn or loose drive gear or a drive belt which is worn or has come off.
Best have this checked at your local repair shop.

Best wishes,
Graemevm

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on May 04, 2010

SOURCE: Everything appears to work but turntable and light on interior.

It's probably your bottom door switch. See this helpful file.

You can download GE owner's manuals and installation instructions here.
You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites. We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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Troubleshooting- microwave turntable and fan run constantly when door closed, door switches test good, timer can be set and oven runs otherwise; need amana microwave ACM1580AS wiring diagram
I'd look for a defective relay or shorted triac on the control panel circuit board. Either could cause this problem.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/david_29ad5d1dd86564b0

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Jan 24, 2015 • Amana Microwave Ovens
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Controls, heating and turntable function normally, but there is an intermittent failure (approx 80 of the time) where the interior light and blower do not function when the microwave is operating .
follow this test and fix it; God bless you
1)

  1. Light bulbIf your microwave light bulb is not working, perhaps it has blown. The first step is to replace the bulb and power on the microwave. If this does not correct the issue, the next step is to check the socket and wiring to verify if that is the problem.
  2. Light bulb socket & main control boardIf your microwave light bulb is not working after the installation of a new bulb, check the light socket as well as the wiring to ensure they are properly operating. If these sources are functioning properly, the next step is to check for a faulty control board as a possible root cause to your microwave light bulb malfunction.
2)
  1. Exhaust fan motorIf your exhaust fan motor is not running, there are a couple of things that you can check involving the motor to locate the problem. After removing the fan motor, you can manually attempt to turn the fan blades with your hand. If the fan motor is working properly, the blades should spin effortlessly. If this does not occur and the blades are taught, the motor will need to be replaced. Secondly, the fan motor itself can burn out due to time and usage. Using an ohm meter, the exhaust fan motor should read open for continuity. If it does not, then the fan motor has expired and will need to be replaced.
  2. ThermostatAnother part that could cause the microwave exhaust fan to not work is a faulty thermostat. A thermostat gauges the air temperature, which activates the exhaust fan when required. If this part becomes flawed, the exhaust fan will not energize and the thermostat will need to be replaced.
  3. Main control boardIf your exhaust fan is still not working and the microwave fan motor, wiring, and thermostat are operating accurately, the root cause could be with the main control board. Replace the main control board.
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Oct 31, 2013 • Jenn-Air JMV8100A 1000 Watts Microwave...
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Turntable stopped working (yes, I pressed the turntable on/off button)
It all depends on your model number of course, but if JUST the turntable is failing, it may just be a defective turntable motor or coupler.

If your internal cooling fan and/or inside / cavity light is defective, too, it may be the internal fan motor, a door switch, or a relay on the control board.

We repair those and can offer more free advice with the full model number and a little bit more detail about what's working, what's not, and when.

You can find handy exploded views and order parts by model number here.
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Nov 27, 2012 • GE JVM1850 1000 Watts Microwave Oven
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Rang lights underneath unit don't work
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, cooling fan, turntable, and/or inside light operation, too.

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 with a one year guarantee.

Or you can buy and replace the control circuit board.

Details of our service are at our Web site, along with a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Read full answer
Oct 11, 2011 • GE Profile Spacemaker Over-the-Range...
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Frigidaire model cfmv156fmc allows programming, lights work but when hitting go wont turn on yet timer is counting down.
If the inside light comes on when you try to cook, but the turntable and internal cooling fan do NOT, then that's a bad bottom door switch or that switch's mount.

See this helpful text file.

If the inside light, turntable, and internal cooling fan DO all come on when you try to cook, but it does not cook, then you have a bad relay or connection on the control circuit board, which we can repair for $39.95. Details here.

We have the service manual and have uploaded it to our site here to help you.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
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Jan 11, 2011 • Frigidaire Microwave Microwave Oven
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Be the first to answer May 26, 2017 • GE JVM1650 1000 Watts Microwave Oven
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The second under cabinet light went out with a pop, and the vent fan went out with it. Is there a fuse for both somewhere? The turntable motor and light and fan still work. Will th vent fan come back on if...
There is a varistor or thermostat switch mounted on the wall behind the control panel. I unpluged the leads and shorted them together. the fan and lights started working again. I got another microwave off freecycle.org for parts. I noticed a lot of sites tend to point to the control panel for a $36 to $100 board repair. Don't fall for it. H.G.
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Jan 03, 2010 • GE JVM1660 Microwave Oven
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Light, turntable and fan don't work
Possibly the light bulb has blown, which has blown on a track on the board which has taken out the turntable motor and the fan. Also, there could be a problem with the door switch.
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Mar 27, 2009 • Panasonic Microwave Ovens
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Microwave turntable runs continuously
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Be the first to answer Mar 26, 2017 • GE Spacemaker JVM1640SJ Microwave Oven
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Microwave seems to turn on when door latch is opened
What's happening is you are activating one door switch a little before the other, and that is causing your light, fan, and turntable to come on. The plastic parts are not perfectly rigid, so they flex a little when you press the button, and that causes the lag to be more apparent. Even if you press the door open faster and look really close, you may notice the light, fan, and turntable coming on for a split second. That's perfectly normal. The relay on the control board must also be turned on before it will actually be cooking.
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Feb 22, 2007 • GE Spacemaker JVM1640SJ Microwave Oven
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Troubleshooting- microwave turntable and fan run constantly when door closed, door switches test good, timer can be set and oven runs otherwise; need amana microwave ACM1580AS wiring diagram

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