KBMC140HBT02 KitchenAid Microwave Oven Combo - Overview

Remove side deco strips to remove screws that hold to cabinet. Pull microwave out and set on saw horses (power cable should be long enough to do this). Remove screws to top cover and lift enough to remove all connectors from the front panel pcb. Remove grounding wires from next top lid. Remove connectors from transformer on rigt side and the two connectionss at the rear fan assy. Remove top cover/vent assy. Remove the next top cover to get access to the light bulb assy. Use a cloth or kleenex while handling the new bulb as you replace it. The clip thta holds the bulb is easily released and use reverse procedure when assembling. For springs those can be replaced without removing the microwave from the cabinet. Remove the 2 screws that hold the door together accessed from the inside of the door at top. Pull door up to release from the clip at the bottom. Remove the broken spring and replace with new one. Use a screwdriver to help twist the torsion spring to clip into place. Replace door assy in reverse order.

After popping the last few kernals of popcorn, we hear a different kind of pop sound come from our microwave oven. When we looking inside, we found that the glass turntable had broken unevenly in half. Although we didn't understand why it had happned, we did know we'd be without the use of the microwave without a new one. After less than 10 minutes surfing online, I had found the correct part on PartSelect.com and had arranged to have it shipped to me by speedy delivery. Once it arrived, I just popped the new turntable into the microwave and used the box to dispose of the broken one. It could not have been easier and it saved me the cost of a service call and likely further delay.

My unit is a wall mount/cabinet/built-in model. The repair is actually fairly simple once you determine that the actual microwave is just a component of the entire unit, and that it (the microwave) can be easily removed from the unit. I did not figure this out until after I removed the entire unit (disconnect the power supply, lift the entire bulky, heavy unit out of the cramped space in the cabinet, etc). Once I got it out I figured out how easy it is to remove the actual oven - a couple of screws, literally. The unit is a bit bulky, but not particularly heavy and is quite manageable. I did this entire process alone.

I got the oven out, rolled it on it's side and found the plate to access the motor. The plate is located on the bottom/underside of the unit. The plate is nothing more than a section of the underside of the metal housing that has been cut-out as an access point. This "cut-out" is not complete - that is, not completely cut out so as to all the plate to stay in place without the need for screws, etc, until you actually have to use it. I used a pair of dykes to cut the couple of points still connecting this plate, removed the two phillips screws to remove the motor, disconnected the two wires connected, then reversed to complete the repair. You then flip the cut-out plate over/rotate it, and some screw holes line up. Find a couple of small screws, and re-attach the plate to cover the motor.

The actual fix is really easy, again, once you figure out the simple way to remove the oven. I am an idiot, so you will probably find this much easier. I could probably do this repair now, after my experience, in less than 30 minutes (probably less than 15 minutes). I probably save a couple hundred $ by doing it myself so was well worth the time to do it. Good luck.