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KMBS104ESS03 Whirlpool Microwave - Overview

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Microwave Turntable Tray – Part Number: W11373838
$72.00
In Stock
Microwave Turntable Tray
★★★★★
★★★★★
(84)
Part #W11373838
This genuine OEM microwave turntable tray is a circular plate made of glass and has a diameter of approximately 16 inches. It rotates food in your microwave oven, so that your food cooks evenly. It is found in the center of your microwave and can be removed from it for cleaning. If your turntable tray is broken, you will notice that it wobbles as it rotates, or it may not rotate at all. With a damaged turntable tray, your food will not cook evenly or thoroughly. The other components in your microwave may also wear out more quickly. To remove your current turntable tray, simply lift it off the spindle in the center of your microwave. This part is sold individually.
DIODE – Part Number: W11256462
$26.82
In Stock
DIODE
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★★★★★
(10)
Part #W11256462
This diode, or high voltage diode, is used in microwaves. It is an electrical current control device that ensures power flows in one direction and not the other way. If your microwave produces no heat, heats inconsistently, or gets noisy, replacing this part can be the solution. The tools needed for this replacement are a nutdriver, pliers, and screwdrivers. First remove the microwave cover, then remove the old part by disconnecting the small thermostat. Replace with the new diode. Remember to use the diagram provided by the manufacturer for more instructions.
Waveguide Cover – Part Number: W11087199
$20.37
In Stock
Door Switch - 250V – Part Number: W10211972
$47.40
In Stock
Door Switch - 250V
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★★★★★
(2)
Part #W10211972
This microwave door interlock switch is a critical safety component designed to prevent the appliance from operating when the door is open. It functions by detecting the door’s position—open or closed—and relaying this information to the microwave’s electronic control system. This ensures the unit only activates when the door is securely latched. Commonly used in microwave models experiencing issues such as failure to start or lack of heating, the switch plays a vital role in maintaining safe operation. Installation involves accessing the internal door latch mechanism and replacing the switch, which typically requires basic tools and careful handling to avoid damage to surrounding components. The switch is compact and designed to fit seamlessly within the microwave’s door assembly.
Halogen Light Bulb – Part Number: W10886919
$26.82
In Stock
Halogen Light Bulb
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★★★★★
(12)
Part #W10886919
This part is the replacement halogen light bulb for your range. The bulb is 10 watts and 12 volts. The halogen lamp lights up the inside of the oven you can see the cooktop more effectively in darkness. If your light bulb is burned out, this is the part that replaces it. Be sure to turn off power to your range hood before you begin this repair. This bulb is sold individually and is a genuine OEM part sourced directly from the manufacturer.
Microwave Turn Shaft – Part Number: W11223840
$25.75
On Order
Microwave Turn Shaft
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(4)
Part #W11223840
This part accepts a D-shaped shaft.
Turntable Motor – Part Number: W10911403
$79.59
In Stock
SHAFT-TURN – Part Number: W11126044
$23.60
On Order
Microwave Capacitor – Part Number: W10850446
$137.03
In Stock
Microwave Capacitor
Part #W10850446
This authentic high-voltage capacitor stores and supplies electrical energy to the magnetron so that your microwave can heat up your food. It is a cylindrical component located inside the control area of the microwave. If the capacitor malfunctions, you may hear buzzing or humming noises, witness sparks or arcing inside the microwave, or experience inconsistent or no heating of your food. As microwaves use high voltage, exercise extreme caution during the repair process to avoid injury. Even when unplugged, the capacitor retains a significant electrical charge. To replace it, start by unplugging the microwave and removing the glass turntable and support before proceeding. Refer to the user guide for instructions on accessing the capacitor within the cabinet. Discharge the capacitor by creating a short circuit between each terminal and between each terminal and the chassis. Do so by using a pair of insulated-handle needle-nose pliers to simultaneously touch both terminals. Alternatively, you can use a well-insulated screwdriver, touching one terminal and gently sliding it forward to the other terminal, holding it there for a few seconds. Avoid touching the metal part of the tool and be aware that this can result in a loud and startling popping sound. Once discharged, you can safely disconnect the wires and remove the mounting fasteners. Please note that this OEM replacement part is sold individually.
Lamp Lens – Part Number: W11193483
$53.20
In Stock
Lamp Lens
Part #W11193483
Plate – Part Number: W10909682
$60.51
In Stock
Release Rod – Part Number: WPW10120235
$10.70
In Stock
Release Rod
Part #WPW10120235

Questions And Answers for KMBS104ESS03

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Dave - For model number KMBS104ESS03
November 20, 2024
The digital display of time only lights approximately 1/2 the number.... otherwise everything functions normal. Any suggestion what I should replace?
Chris Boyle Profile
Hi Dave, Thank you for contacting us. This would indicate the Control Board with the Display, PartSelect Number PS11765745 will need to be replaced. Thank you for the inquiry, good luck with the repair!
$218.28
In Stock
CNTRL-ELEC
2 people found this instruction helpful.
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KELLI - For model number KMBS104ESS03
February 19, 2026
Microwave will not power on. I've tried the breakers, and still nothing. Any options for repair?
Chris Boyle Profile
Hello Kelli, Thank you for writing in. Our research has found PartSelect Number PS2338920, the door switch, could be the problem. We hope this helps.
$47.40
In Stock
Door Switch - 250V
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Common Symptoms of the KMBS104ESS03

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

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Microwave made very loud noise while on. No heat.
52 of 87 people found this instruction helpful.
  • Sleiman from Miami, FL
  • Easy
  • More than 2 hours
  • Pliers, Screw drivers
Unless you have a very comfortable background with electronics and electricity, I don't necessarily recommend taking apart a microwave. If you are very handy and are going to be VERY cautious to follow the rules of discharging caps and testing voltages before moving forward, then go for it. That said, I took the microwave off and apart. Not knowing where to find the parts, I was fortunate that the installer put the instruction book for the microwave inside the front vent slot above the touchpad for reference. it details the location of every part and it tells you very clearly what each part you test should show specific to this microwave on your multimeter. Find this guide online if you don't have it. Turn on the microwave for 20 seconds with a glass of water to make sure it's not heating - that with the noise means it's eeither the magnetron, cap, or diode. Read the notes on this site for all of the basic things to look for with the magnetron, diode, and capacitor. Once comfortable with the guide, locations of those devices, and how to test, then take it down and apart. Unfortunately, I didn't do all those things in that order, and it only wasted a lot of time trying to find the parts. Once I found the parts and put all the screws and covers back for all the areas that didn't need to be accessed for the repair, testing went quickly. The diode was bad. Ordered a new one and had it in 3 days or so. That means your microwave will be apart and sitting somewhere for a little while until you get the part and have time to repair it. Putting the diode back isn't too bad. Reassemble the microwave and put it back up again. If i had to do it again, it would take me 20 to 30 minutes once the microwave was down and on a table. Also, I used some bricks with towels over them or you could use some sawhorses to keep the microwave elevated so you can plug it in and run it after installing the new component. Again, make sure you discharge the cap before touching anything again even if you didn't run it, but just plugged it in.
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Humming sound, not heating.
43 of 63 people found this instruction helpful.
  • Fausto from Miramar, FL
  • Easy
  • 15 - 30 mins
  • Nutdriver, Pliers, Screw drivers
I turn off the income electricity by shutting down the corresponding circuit breaker. Then, I removed the control panel from the microwave which gave me access to the capacitor and adjacent diode. After that i unscrewed the defective diode and replaced it with the new one and BINGO!
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Microwave glass turntable when pop
35 of 42 people found this instruction helpful.
  • Liza from Monterey, CA
  • Really Easy
  • Less than 15 mins
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 th an 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.
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