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KCMS125YSB0 KitchenAid Microwave - Overview

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Screw – Part Number: W11233072
$21.45
In Stock
Screw
★★★★★
★★★★★
(6)
Part #W11233072
This is a multi-use and multi-appliance screw. It can be used on a microwave, refrigerator, range/oven, air conditioner, dehumidifier, washer, or dryer. The measurements of this screw are 8 x 1/2 inch. It has 6 threads. Refer to the manual provided by the manufacturer for further information on repair and accurate guidance. Remember to wear work gloves as a safety precaution.
Door Interlock Switch Kit – Part Number: 4392027
$89.70
In Stock
Door Interlock Switch Kit
★★★★★
★★★★★
(3)
Part #4392027
This part is a genuine manufacturer door interlock switch kit, also known as primary micro switch or microwave switch kit, for a microwave. The function of this part is to sense when the door of the microwave is open or closed. If the part is defective, the microwave will not start or will start when door is open. This kit contains two 15 Amp, 125/250 Volt switches with 3/16 inch terminals. Be sure to disconnect power to microwave before replacing part. Use extreme caution when replacing microwave parts, as high-voltage capacitors can retain an electrical charge when unplugged. NOTE: This kit includes 2 single pole, double throw (SPDT) micro switches. As per the manufacture for the secondary interlock switch order part # 56001100.
Microwave Glass Cooking Tray – Part Number: WP8184775
$68.86
Special Order
Microwave Glass Cooking Tray
★★★★★
★★★★★
(1)
Part #WP8184775
This tray rotates in your microwave ensuring more even temperatures.
Microwave Screw – Part Number: WP4158079
$8.55
Special Order
Microwave Screw
Part #WP4158079
This screw is for microwaves. A qualified technician should install this part if it requires accessing internal components of the microwave or microwave door. High-voltage capacitors can retain a lethal electrical charge even when the microwave is unplugged, and door shielding components should be tested for leaks after all door repairs. This screw is sold individually.
Button Return Spring – Part Number: WP8205529
$22.52
Special Order
Button Return Spring
Part #WP8205529
This spring is located behind the release button on microwaves.
Light Bulb – Part Number: W10873798
$17.15
In Stock
Diode – Part Number: WP4313101
No Longer Available
Diode
Part #WP4313101
This part allows power to go one way but not the other.
High Voltage Capacitor – Part Number: WP815073
No Longer Available
High Voltage Capacitor
Part #WP815073
Paint Touchcup – Part Number: WP261869
$22.52
Special Order
Paint Touchcup
Part #WP261869
BUTTON-PTS – Part Number: 4357387
No Longer Available
BUTTON-PTS
Part #4357387
Range Touch-Up Paint – Part Number: 261900
$57.38
Special Order
Range Touch-Up Paint
Part #261900
Sealer – Part Number: WP482338
$47.40
In Stock
Sealer
Part #WP482338
This 3 oz. silicone sealant is designed to form a strong, watertight bond between appliance components. It's commonly used to repair or reinforce seals that have begun to fail due to age, heat, or wear. Ideal for use in a variety of household appliances, this sealant ensures a long-lasting and secure hold that helps prevent leaks and moisture damage. The silicone formula offers excellent flexibility and adhesion, making it suitable for both metal and plastic surfaces. Whether you're addressing a worn gasket, sealing a panel seam, or reinforcing a water-tight enclosure, this sealant provides a dependable fix. Compatible with many appliance brands and models, it’s a reliable choice for both DIY repairs and professional maintenance tasks.

Common Symptoms of the KCMS125YSB0

How this model fails, and the parts that fix it.

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Microwave worked intermittently depending on how door was closed
67 of 85 people found this instruction helpful.
  • Robert from Bainbridge Island, WA
  • A Bit Difficult
  • 30 - 60 mins
  • Pliers, Screw drivers
Remove top grille (2 screws), undo control panel (1 screw). Tilt down control panel, switches are on the left. There are actually three switches that are involved with the door, two horizontally mounted, one vertically mounted. This would be an EASY REPAIR, but it took me a while to figure out which of the three switches was bad, and a lso took a while to figure out that there is a plastic rod that inserts through the hole in the switch body. Once i figured this out went like a breeze. Lower horizontal switch was the bad one, but since the kit came with two switches i went ahead and replaced the upper horizontal one as well. IT appears that the horizontal switches are probably more likely to fail than the vertical switch based on the position of the switch and force angles. Works great now!
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Close the door on the microwave, punch in the # nothing happened
15 of 23 people found this instruction helpful.
  • Robert S. from Stafford, TX
  • Really Easy
  • 15 - 30 mins
  • Screw drivers
I removed the unit from the wall. Took the cover off. Set the unit on its side. It revealed the working parts. Removed the old micro switches. Put in the new oness. Presto, it worked. Very easy for me.
The parts was delivered almost before my notice they were shipped.
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Needed to push door up to run appliance.
15 of 28 people found this instruction helpful.
  • J Patrick from Baltimore, MD
  • Easy
  • Less than 15 mins
  • Pliers, Screw drivers
1. Removed cabinet screws (10-15?). 2. Removed cabinet. 3. Removed top interlock switch which actually was not defective. The press clip connection appeared as if it had been arcing for quite some time and the corrosion created resistance sufficient to prevent the current from getting through the switch. 4. Replaced switch anyway but brok e plastic retaining clip despite every effort not to do so. Reset broken clip with super glue. 5. Reassembled cabinet and appliance is in good working condition.
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