GE model number jvm1790sk 01 over range microwave convection oven turns on when door is closed but i think it is the convection oven that is on cause the turn table does not turn and the light does not come on. Open the door and the noise goes away still can use the microwave wave with the noise being on just unplug when completed reheating food.

a screw at the back side when removed get access to the bulb.Usually 40Watts bulb with1/2 " threaded

Pretty sure its the door interlock switches.
you might need a service call from the authorized rep.... sorry.

The fan is for air circulation regulation, e.g. preventing steam (and smoke) from building up inside, and also stops air pressure from building up inside so you won't get a blast of steam coming out or worse. On the convection side it heats the food faster and more evenly. You will need to replace the fan assembly to keep the microwave safe. the noise and sparks are probably due to spent bearings and / or a dislodged fan scraping against another surface or something getting in the way of the fan

My bet would be that the convection fan blade is loose on its shaft or has some other problem.

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.



At our Web site, we have a video available showing how to remove a typical over the range control panel assembly in under 5 minutes.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven here.

Accessing some components for testing and possible replacement will require you to remove the oven from the wall.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

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

GE has the manuals for most of their appliances on their site: http://www.geappliances.com/service_and_support/literature/ . Just enter the model number and click Submit.
The direct link to the manual for the JVM1790 Over-the-Range Convection/Microwave oven is here: http://products.geappliances.com/MarketingObjectRetrieval/Dispatcher?RequestType=PDF&Name=49-40480-1.pdf . GE only lists the JVM1790CK, JVM1790BK, JVM1790WK and JVM1790SK.

I hope this helps.

Cindy Wells

HELLO.

When the F8 code appears,it means that electric control requires replacement because the relay drive circuit has been lost.

Attempt to clear the code by pressing Cancel and cutting power to the range for 30 seconds.

If the code cannot be cleared, replace the electric control.

thanks.

This is a pretty bad design, sometimes you can just remove the upper grill and access the light assy. If the panel is to tight to work in to change the light,you get to take the whole micowave down and remove the outer wrapper to change the light bulb. This is also not a standard bulb (part #WB25X10019). You may be able to get one from Lowes or Home Depot actually Sears would be a better bet, otherwise you will need to order one from an appliance parts outlet. Hope this helps and sorry I didn't design the thing I just fix them.

The megatron tube is not working. The microwave should turn off when the door is opened for safety. If it is still under warranty, return it. If not, you may consider replacing the unit. I know its expensive, but its just taking up cabinet space tonight.

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101
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If you or a friend decide to work on it, we have *critical* safety and disassembly info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your base model number (without the suffix) here: http://tinyurl.com/gv383 You may have a bad door switch. We also have a file on door switches at our site.