Replace bulb on JVM1790 - GE Advantium 120 Convection/Microwave Oven

If that is the little bulb that lights up under the unit: http://www.partselect.com/PS2351821-GE-WB25X10019-Halogen-Light-Bulb-120V-20W.htm?SourceCode=5&SearchTerm=JVM1790&ModelNum=JVM1790

WHEN THE BULB BLEW IT PROBABLY BURNT OUT VIOLENTLY AND DAMAGED THE RELAY ON THE MAIN BOARD THAT CONTROLS IT. WILL PROBABLY HAVE TO REPLACE THE MAIN POWER BOARD WHERE THE RELAY FOR THE LAMP IS LOCATED

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

The cooktop light is 120V, 40W max., part number WB08X10051.

That's all covered on page 27 of your owner's manual here.

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

To replace the inside light, you'd need to remove the oven from the wall, and take off the outer cover.

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

1. Unplug Oven
2. Unscrew 2 screws on top front of oven
3. Pull of front vent (might need a little force the
first time but not to much or you will crack
plastic)
4. Unscrew screw facing you near the front that is
attached to metal plate on bottom of opening
behind the vent.
5. Pull out metal plate (box) carefully not to
damage any wires.
6.Bulb is in this metal box, pull out old one and
press the new one's prongs into holes (be
careful and gentle the bulb breaks easily,
don't try to pull it back out to see if it's all
the way in or you will most likely pull a
prong out of the bulb) just firmly press bulb
into place.
6. Screw metal plate back in place.
7. Plug in oven and test bulb.
8. Unplug oven again and put vent back on with
the 2 screws.
9. Plug in, set clock and your done.

The first time I opened it up was to look for the bulb. The vent needed a little pulling to come off. The second time (to put in new bulb) it came off easier and whole thing took about 5 minutes.
Hope this helps.
Just in case: I am not a professional nor claim to be. This is based on my own experience. Yours may differ. Unless you feel totally comfortable you should contact a licensed electrician or an authorized service agent.

the start button uses carbon pads and they could be worn out or not contacting properly you try and replace the control pads

Unplug unit before entering.

The light bulb is behind the air vent at the center top of the microwave. Remove two screws at the very top front of the microwave and pull the vent cover forward at the top. Sliding left is sometimes necessary to release the bottom tabs of the vent cover. The light fixture will be behind this cover.

Good Luck. Reverse the above process to reassemble.

Make your own template of the holes in the top of your cabinet and lay it over the new unit and see if they align. As long as your replacing GE with GE it probably will work.

Very easy to replace...at least on my JVM1790. Remove the top vent....the long plastic thing that runs along the top of the MW. Two screws on top of the micro. Behind the charcola filter (if you installed one) is an access area to the bulb. remove one screw and the entire assy comes out. Simply R & R the bulb.

The interior oven light can be accessed in the following way:
1.Open door and remove the top grill via the 2 screws along the top edge.
2. In the interior light will be under metal plate with fasten by single screw. The halogen bulb is rated at 120V 20watt. Looks like a G-8 bulb with 8mm pin spacing with o.a.l. 1-5/8" long

Get these bulbs cheap at http://www.1000bulbs.com/120-130-Volt-G8-Base-Halogen-Light-Bulbs/