KHMS155LSS3 KitchenAid Microwave - Instructions

Take off top facing over microwave using screwdriver also protection plate for diode and capaitor. Disconnect diode from frame, bracket to capacitor then remove, disconnect wires leaving diode on capacitor for right connection, replace, rewire done.

Removed the microwave from above the oven by loosening the two screws above the microwave. As the unit tilted outward lifted up and the whole unit came out all the time feeding the power cord through the cutout for the power cord. After it was out removed the cover and identified the capacitor and made sure it was discharged and removed and replaced the diode. tested before reinstalling and it heated up just fine. Reversed order and reinstalled . Very easy job maybe a second hand to help fish the power cord when installing and removing.

UNPLUGGED IT
Remove 2 screws on top of the unit holding the grille in- remove the grille
Remove the one screw at the top of the display and tilt the top of the display towards you.
At the bottom is a hinge that slides up to be removed- leave the screw in place.
The conector for the keypad is a ribbon connector that is attached to a black connector about 2/3 of the way up the circuit board- to release the ribbon cable the highest end of the connector has a plastic release clip that you can bend with your fingernail allowing the long edge of the connector topivot about the (lower) hinged end. Not hard to do just don't force it.
Do not remove any wires-remove the screws holding the circuit board on (2 I think) at the bottom.
The top of the circuit board is held in by sheet metal features in the housing- mine were a bit tough but its obvious how to remove it.
The keypad/exterior sheet metal & display assembly should be free now- support and place display up on a work surface.
To remove the current keypad CAREFULLY pry around the edge/junction of the ext sheet metal and the keypad. The keypad is held on with adhesive and will require some effort. Also the keypad extends slightly under the ext shett metal so it will be a pain. the goal is to start it peeling w/o damaging the sheet metal around it.
To remove the remaining adhesive (& paper) use denatured alcohol.
The new keypad is made to go under the ext sheet metal but it isn't possible to install it this way. I trimmed the edges of the new keypad so that it would drop in. You only get one try installing the keypad so make sure it fits before putting it in with the adhesive exposed.
YOU MADE IT!! Is Fixed !!

Remove “over the stove” unit. Remove unit shell case. Unscrew and disconnect diode. Replace diode. Re-assemble. Put unit back in place.

I read previous hints on how to replace. All suggested using tile wedges removing the inner locking piece which would likely result in some broken tabs. I tried removing this inner piece and was sure the tabs would break. I removed the three screws on the handle side of the door and used a skinny flat head screw driver between the outer skin and both the inner piece and the glass section came out together. Access to the screws attaching the handle were accessible. With the screws out, the inner piece can fall off, remove it, replace the handle and the inner piece re attaches with no breakage.

I was able to buy the mounting bracket for a very cheap price and was able to instill it in my kitchen with ease.
Thank you

I removed the broken tray and ring-turn and replaced it with the new
Service was fantastic, parts were ordered one day and received the next

Washed the glass tray and put in the microwave oven. Easy..

Rep knew exactly what I needed when I described where the part should go on my microwave - price great - shipping great - installed in seconds. Thank you!

I ordered another one and placed it inside the microwave. It works and fits perfectly. I received the order exactly as scheduled.

PartSelect website indicated replacing the high voltage power supply diode is the solution for "no heat" 99% of the time, but the diode was OK. There is more info at the website concerning the case of "loud buzzing and no heat" indicating the magnetron needs to be replaced. As an electrical engineer with knowledge of microwave components, this was also my best guess. However, getting to the magnetron is not the easiest job, but it's not impossible. You also have to be careful to bleed off any charge stored on the high voltage power supply capacitor. Luckily, I found my KitchenAid service manual tucked away inside the unit since I couldn't find it online.

Removed turntable
Place support ring in track
Place turntable on support ring.
Easy, peasy!

easy to replace, just the same as cleaning the turntable and placing back in the micorwave;

Looked up the Whirlpool Co. and ordered the part. It was quite simple. Arrived in 2 days and I simply placed it in the microware. It was very very easy!

E. Robinson

Remove the two screws to the plastic vent strip at the top of the unit. That exposes a metal cover (upper right) held in place by two more screws. (Found that removing the screw holding the key panel in place and moving that out of the way made for more work room) Remove the metal cover. The HV diode (visible) on one end is secured to the chassis by a screw. The other end is fitted to the HV capacitor. So unscrew one end and pull the HV diode off the capacitor. The replacement fits on like the old one came off. Very simple repair. But it would be safe to short the capacitor terminals to the chassis first. Noticed that it appeared the sparking was caused by the HV diode's outer casing being worn by the asbestos covered wire next to it and laying against it. I made sure the two were not touching, before putting the covers back on. Also, the problem started with an occasional spark when the MW started. It quickly deteriorated to a full, non-stop electrical sparking. You can hear it, smell it, and see it through the top vent. You don't need to remove unit to work on it.