We have a KitchenAid Superba microwave and oven combo, part number 4450786A. The microwave light went out and now when we try to start it the message comes up "Door". The oven seems to work OK.

try to turn the coupling, either stripped broken coupling, or bad gear in drive motor. should not be able to turn by hand

Sarah,
That model number is not coming up as a good number, but another model that I looked at said that particular model was a 900 watt microwave.

Magnetron needs replaced.

CAUTION: Your microwave oven is capable of giving you a serious electrical shock, even when it is unplugged. We strongly suggest you seek the assistance of an appliance repair technician when conducting any microwave oven repair.

Cheaper to buy a new Microwave oven.

There will be a technical sheet hidden behind the controls which will help you locate major components.

The marked diagram below shows you the various parts that can fail and what effect will result.

You can find helpful exploded view diagrams and order parts by part number here.

Check the two fuses first, then if you have to check the cavity TCO, you will likely need to remove the oven from the wall.

If for some reason you don't still have your installation instructions, you can get them - and the parts list - here.

HI, this is an indication of a failed door switch. When the switch fails, the control cannot recognize the closed door signal. Simply replacing the door latch mechanism will solve this issue.

Replace the door latch assembly, asap.

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

Microwave Oven Basic Troubleshooting Tips

heatman101

dhjjd

You will need to remove the oven from the wall and remove the outer cover.

If for some reason you don't have yours, you can download your owner's manual and installation instructions free from this page.

You can also 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 halogen types with your bare skin, as the oils will shorten the bulb life.

You should be able to get one from a home center or local appliance parts store.

If you order it online (from the link above) it is part # 4375348.

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

open the top cover then you can see the bulb on the right side of the oven, just remove the lamp and replace it by a similar one. you can try to get the lamp from any electrical shop with the same size and same rating.

Remove the front panel by removing the screws located on the inside of the door (note hold door inplace, since it is heavy and will fall out after screws removed). Unscrew screws located on bottom of plastic retainer (2 each) Remove tension spring. Note 2 are included right and left. Note color of spring on end, different springs for different door types, stainless, black,beige or white. Replace all in reverse order.

Put the probe in the oven and beeping stopped. Left it in overnight and next morning took the probe out and there was no beeping. Have not heard beeping all day. Don't know why this worked but it did.

LaMason