Burnt bulb in GE JE1590sc001 convection microwave

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

Hi, since you have located the burnt lamp, all you need to do is to unscrew the burnt lamp and replace the new one by screwing it in.....
You only need to unscrew to remove the lamp and if you cannot remove by unscrewing because it is stuck in, then you need the assistance of an electrical tech to help remove with his pliers....

sTEVE, THE CAPACITORS HOLD A CHARGE EVEN AFTER THE SYSTEM IS UNPLUGGED. A good rule of thumb would be to allow at least 48 hours for the capacitors to discharge before even getting nea them. Then, yes, you can replace the bulb. 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.

Remove the screws from around the rear of the oven and slide the cabnet off to the rear. You should be able to access the bulb from here.
WARNING: any time you work on a microwave you have to be careful of the capacitor. Unpluge the microwave and discharge the capacitor with a large screwdriver with a plastic handle.
Be careful.

dismantle the unit to reach the burnt out bulbs

Accessing the internal light bulb on model KBMC140HSS bulb 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 Whirlpool / Kitchenaid owner's manuals and installation instructions here.

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

These models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

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

how do I change the little light bulb on the top to take off the cover what do i need.

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If there's no obvious removable cover over the bulb (and the owner's manual doesn't address it) some disassembly may be required.

Always unplug a microwave before removing or installing any bulbs.

On an over the range type, remove the vent grille across the top and see if bulbs can be accessed there. There may be a panel on the bottom covering the light(s), instead.

If not, chances are you'll have to remove it from the wall, then remove the outer cover. 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.

Once it's out of the wall, the outer cover (wrapper) will need to be removed, just as you'll need to do on a counter top model.

Be sure to put all the screws back in the right holes, since some may be special grounding screws.

Bulbs can be had in most grocery stores, hardware stores, home improvement centers, and big box or department stores.

Many models use halogen lamps. You must not touch the new one with your bare skin, as the oils will shorten the bulb life.

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

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/