Kenmore Microwave 721.88509800 (72188509800, 721 88509800) Parts
Genuine Lg part
By: Lg
Part Number: 3B73362F
The Microwave Door Switch is an OEM replacement part for LG countertop microwaves. It monitors the door position electrically to prevent unsafe oven operation if ajar.
Symptoms of a bad door switch include:
- Inability to start or pause a cooking cycle unless securely latched
- Error messages about the door being open
- Inconsistent detection of open/closed door positions
- Unreliable contact functioning after extended use
Causes involve normal wear of electrical contacts and internals through many open/close uses. Exposure to moisture intrusion from spills may potentially damage sensitive switch circuitry over time as well.
This genuine LG replacement switch is also compatible with Sears/Kenmore microwaves.
This part fixes the following symptoms
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No heat
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Won't start
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shuts off after a few seconds
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Do-It-Yourself Stories from Customers like You
Interior light and turntable failed at the same moment. Stacey B. • New Bern , NC • February 01, 2021
Knowing the odds of 2 failures occurring at the same exact time was unusually high, I just searched your site for what other broken items might affect these two failures. Came up with next control item upstream and tallied that item failure with percentages of successful repairs, (4 mins.) door safety switch.
Since I had to change out the most likely of the 3 and since I was already was going to be into the switch panel I ordered all 3 and swapped them all out to cover my butt, as they were...
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$19.45
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$23.34
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$3.89
Genuine Lg part
By: Lg
Part Number: 5230W1A003A
The Charcoal Filter is an OEM part for LG microwaves. It plays a crucial role in filtering and removing odors, smoke, and grease particles from the air during cooking. It is constructed with activated charcoal, which has absorbent properties and helps to eliminate cooking odors.
Over time, the charcoal filter can become saturated and less effective in odor removal. It is recommended to replace the charcoal filter periodically to maintain optimal performance and ensure clean and fresh air in your kitchen.
Symptoms of a saturated or clogged charcoal filter may include:
- Lingering cooking odors in the kitchen
- Reduced efficiency in capturing smoke or grease particles
- The presence of visible debris or discoloration on the filter
This OEM LG part can also be used on Kenmore/Sears appliances.
Do-It-Yourself Stories from Customers like You
Kennmore elite microwave with f5 error code Julius D. • Oxford , PA • February 11, 2017
When Microwaving food, the display panel would seem to act normal, but the typical microwave sound would be absent. No microwave action would occur. Eventually an F5 code would display. Problem was the upper door switch. Found it by opening up the cabinet, removing the display panel (1 screw and a couple of plugs) and testing all three micro switched with a meter. Two switches are for the door and one for some kind of ventilation flap. They are all in the same area. Go to YouTube to see...
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$34.36
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$40.89
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$6.53
Genuine Lg part
By: Lg
Part Number: 6324W1A001L
The Magnetron is an OEM part for LG microwaves. It is responsible for generating the microwaves that cook or heat the food inside the appliance. The magnetron converts electrical energy into microwave radiation, ensuring efficient and even heating.
Causes of a bad magnetron can include prolonged use, electrical surges, or overheating. Over time, these factors can lead to the magnetron wearing out or failing completely.
Symptoms of a bad Magnetron include:
- The microwave not heating food
- Strange noises during operation
- Burning smell or smoke
- The microwave shutting off unexpectedly
This OEM LG part is also compatible with Sears/Kenmore models.
Do-It-Yourself Stories from Customers like You
Didn't heat. Harry W. • Maple Park , IL • January 21, 2018
My son told me that almost all the microwave ovens that came into the repair center he worked at, 15 years ago, had a defective magnetron. I ordered a magnetron, and sat back until one shipped. The one that came, the first time, was in a small factory cardboard box, which was in a large bubble-pak Fedex envelope; which didn't show any signs of abuse. Inside, however, the factory box was beat up. Removing the magnetron, I noticed that the socket, as well as its' pins, was bent, and loose in the...
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$128.75
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$153.21
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$24.46
Genuine Lg part
By: Lg
Part Number: 4810W1A151A
The Damper Bracket is an OEM component for LG microwaves. Located inside the microwave cavity above the wave stirrer, this bracket holds the position of the damper assembly that helps distribute heat evenly during cooking. The bracket measures approximately 12” by 5”.
Symptoms of a bad damper bracket can include:
- Hot or cold spots developing within the microwave cavity
- Looseness in the damper assembly fit
- Reduced heat circulation leading to uneven cooking
Causes typically consist of cracking over long-term heat exposure. Repeated opening/closing of the damper may also weaken attachment points on the bracket.
This OEM LG part is also compatible with Sears/Kenmore microwaves.
Do-It-Yourself Stories from Customers like You
Incorrect parts given to me upon purchase of appliance Marnie S. • Kennewick , WA • March 08, 2018
Needed installation parts. I ordered the parts from the company I purchased the appliances from. A week went by and no parts, called, emailed and called again to find out when the parts would arrive to be able to Re-schedule the installation. After the run around, I found AppliancePartsPros website and placed my order with them. I received the parts I needed within the time they promised. I was able to schedule my installation to enjoy my new appliance. It's been almost 4 weeks and still no...
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$15.95
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$18.98
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$3.03
Genuine Lg part
By: Lg
Part Number: 4900W1A001B
The Damper is an OEM component for LG microwaves. Located within the cooking cavity, it regulates airflow and safely vents steam escaping heated foods.
Causes of a faulty damper can involve standard wear and exposure accepting steam and condensation release. Food or liquid particles drying within tracks also threaten eventual adhesion issues restricting travel if left unaddressed between cleanings.
Symptoms of a damaged or defective damper include:
- Inability to adequately vent excess moisture from heating
- Potential messes spilling beyond the microwave frame
- Grating sounds or squeaks emitting during cooking
- Flaps possibly stuck inhibiting steam circulation
This damper is also compatible with Kenmore microwaves as well.
Do-It-Yourself Stories from Customers like You
Incorrect parts given to me upon purchase of appliance Marnie S. • Kennewick , WA • March 08, 2018
Needed installation parts. I ordered the parts from the company I purchased the appliances from. A week went by and no parts, called, emailed and called again to find out when the parts would arrive to be able to Re-schedule the installation. After the run around, I found AppliancePartsPros website and placed my order with them. I received the parts I needed within the time they promised. I was able to schedule my installation to enjoy my new appliance. It's been almost 4 weeks and still no...
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$13.74
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$16.49
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$2.75
Genuine Lg part
By: Lg
Part Number: 4970WRA001G
The Door Latch Spring is a genuine OEM part for LG microwaves. As a key component of the microwave, the door latch spring is responsible for providing the tension needed to securely close and latch the microwave door. It works behind the scenes to ensure a tight seal when the door is shut.
Symptoms of a bad door latch spring include:
- The microwave door not closing or latching properly
- Gaps appearing around the door seal when shut
- Difficulty opening and closing the door
Causes of a bad door latch spring can include wear and tear over time. Exposure to excessive door slamming can also place undue stress on the spring.
This genuine LG OEM replacement part is also compatible with Sears/Kenmore microwaves.
Do-It-Yourself Stories from Customers like You
Lg microwave door would not latch closed Audrey S. • Rochester , NY • February 05, 2018
Ordered door latch part and new spring.
You Tube video helped me identify what I needed. I tried the fix recommended and it didn't work so I ordered the parts. It took less than 5 minutes to switch out the old for the new. If the door doesn't latch, you can't run the microwave and it's key. It wasn't an expensive or hard fix to get my microwave up and running again. So pleased with AppliancePartsPros for having what I needed and being reasonable about pricing. Turnaround time was excellent!
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$7.43
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$8.92
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$1.49
Genuine Lg part
By: Lg
Part Number: 6021W3B001V
The Diode is an OEM replacement part for LG countertop microwave models. Located internally on circuit boards regulating magnetron function, it precisely controls the electric current flow.
Causes of a bad diode involve thermal fatigue over time putting repetitive stress on sensitive semiconductor junctions. Microwave demands may accelerate failures.
Symptoms include:
- Intermittent cooking or complete failure to energize the tube
- Error codes appearing on the control panel display
- Buzzing or humming noises emitting from internal circuitry
This OEM LG part is also compatible with Sears/Kenmore microwaves.
Do-It-Yourself Stories from Customers like You
Our microwave made a "pop" sound and stopped working/ Daniel D. • Chesterfield , MO • September 12, 2020
I have a multimeter so I was able to check the fuse per website recommendations and it was blown. However, the capacitor on the microwave was also original so I elected to replace the capacitor, fuse, and the ground protect diode. The repair was very simple (making sure the capacitor was discharged before replacing) and the microwave is now up and running again. Excellent trade to buy $40 worth of parts rather than a new $400 microwave. One nit - Kenmore puts a screw in the back that...
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$15.95
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$18.82
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$2.87
Genuine Lg part
By: Lg
Part Number: AEJ75540901
This holder assembly secures the locker/latch mechanism in place so the door or access panel aligns and closes properly. Replacing a cracked or missing holder restores secure engagement and smooth, reliable operation. What it does:
- Supports and positions the locker/latch mechanism
- Maintains alignment for consistent latching and closing
- Common symptoms of a failed holder: loose latch feel, misalignment, door/panel not staying closed, or visible cracks/broken mounts
- Direct-fit replacement to restore proper support
What's included:
Install notes:
- Disconnect power to the appliance before servicing.
- Access the locker area and retain any screws/clips; transfer any reusable hardware from the original holder as needed.
- Align the new holder with existing mounting points and tighten screws evenly—do not overtighten.
- Test latch engagement and door/panel operation before final reassembly.
Do-It-Yourself Stories from Customers like You
Microwave ran intermittently because door would not turn on all the switches Howard P. • Fredericksburg , VA • October 27, 2019
Parts diagram indicated that the microwave door when closed, turned several switches on. I replaced all the parts that were associated with the door lock. Also while there, put in a new charcoal filter.
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$11.95
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$14.34
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$2.39
Genuine Lg part
By: Lg
Part Number: 6912A40002E
The Halogen Lamp is an OEM part for LG microwaves. It illuminates the interior of the microwave, allowing you to monitor the cooking process without opening the door.
Common causes of a bad halogen lamp include prolonged usage, electrical surges, or damage from impacts.
Symptoms of a bad halogen lamp include:
- The microwave interior remaining dark during operation
- Flickering or dim lighting
- The lamp not turning on at all
This OEM LG part is also compatible with some Kenmore models.
Do-It-Yourself Stories from Customers like You
Halogen lamp under microwave was burned out Robert M. • Glen Carbon , IL • November 21, 2015
The replacement lamp fit perfectly. I had tried other replacement lamps from the hardware store but wasn't able to find one that would fit. The lamp socket on the microwave was slightly smaller than a standard bulb.
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$19.95
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$23.74
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$3.79
Genuine Lg part
By: Lg
Part Number: 6930W1A003J
The Thermostat is an OEM part for LG microwaves. This part monitors and regulates the temperature within the appliance. The thermostat ensures that the microwave does not overheat, automatically shutting off the power if the internal temperature exceeds safe levels. This preventive measure helps to avoid damage to the microwave and potential safety hazards in the kitchen.
Causes of a bad thermostat can range from normal wear and tear, which may cause the component to lose its calibration over time, to overheating incidents that permanently damage its sensitivity.
Symptoms of a bad Microwave Thermostat include:
- The microwave unexpectedly turning off during use
- The microwave failing to start
- Inconsistent cooking temperatures or unevenly cooked food
This OEM LG part is also compatible with some Kenmore models.
Do-It-Yourself Stories from Customers like You
No power. William R. • Jacksonville , FL • February 12, 2019
I checked for the reasons there was no power to the microwave. Then I talked with the technician at AppliancePartsPros who stated that it was most likely a blown or defective fuse. My LG microwave has two thermal fuses, a fuse assembly with two prongs and a short (1 inch) barrel type fuse. I replaced all of them after viewing YouTube videos and then reviewing the diagram for my microwave on the AppliancePartsPrps website. That was very helpful in locating where the fuses were installed.
It...
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$11.95
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$14.10
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$2.15
Genuine Lg part
By: Lg
Part Number: 6501W1A013A
This humidity sensor assembly monitors moisture inside the microwave cavity during Sensor Cook and Reheat cycles, allowing the control to automatically adjust time and power. Replacing a failed sensor can restore accurate, reliable sensor-based cooking performance. What it does:
- Detects steam/humidity in the cavity for auto-sensing cook and reheat programs
- Sends feedback to the control board to adjust power levels and cook time
- Failure symptoms include sensor cook not starting, stopping early, "sensor" error messages, or inconsistent results on auto settings
What's included:
- One humidity sensor assembly
Install notes:
- Unplug the appliance before service; microwaves contain a high-voltage capacitor that can retain a dangerous charge
- Handle the sensor face carefully and keep it clean; route and secure the wire harness as originally
Do-It-Yourself Stories from Customers like You
Microwave would not microwave Richard E. • Cape Coral , FL • January 05, 2020
Replaced the Humidity sensor, Thermistor and door switches. I replaced these thinking the problem was one of the items but didn't want to trial and error one part at a time. Plus the cost was reasonable so if these didn't help I wasn't out a lot of money. I sense the door switch was the problem. Replaced all items and the microwave works great. Thanks for the advice and the cost of the parts.
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$70.95
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$84.43
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$13.48
Genuine Lg part
By: Lg
Part Number: 3861W1A043C
Do-It-Yourself Stories from Customers like You
Missing mounting bracket and hardware. Stephen H. • Fort Myers , FL • January 01, 2021
Ordered it from you.
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$41.23
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$49.06
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$7.83
Genuine Lg part
By: Lg
Part Number: 6549W1S018C
This synchronous motor drives the microwave's glass turntable at a steady speed so food rotates for more even heating. Replace a weak or seized motor to restore smooth tray movement and consistent cooking performance.
- Provides slow, consistent rotation of the glass tray during cook cycles
- Helps promote more even heating by turning food under the magnetron
- Typical symptoms: turntable not turning, intermittent or jerky rotation, or humming without movement
- Located beneath the oven cavity, driving the coupler from below
What's included: One synchronous turntable motor Install notes:
- Disconnect power before servicing; microwaves contain high-voltage components that can retain a dangerous charge
- Access is typically from the bottom; remove the bottom cover and mounting screws to reach the motor
- Transfer the two wires one at a time to the new motor and ensure the shaft fully engages the turntable coupler
- Reinstall the cover and test rotation first without the glass tray, then with the tray and support
Do-It-Yourself Stories from Customers like You
Microwave turntable motor burned out Raymond B. • Calais , ME • September 23, 2017
Removed screws from bottom of microwave, replaced motor.
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$81.37
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$96.83
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$15.46
Genuine Lg part
By: Lg
Part Number: 1TTL0402818
This truss head tapping screw secures panels, brackets, and covers in your appliance. Replacing a missing or damaged fastener restores a snug fit, reduces vibration, and helps keep components properly aligned for reliable performance.
- Provides low-profile holding power; wide truss head helps secure thin panels and trim
- Replaces lost, stripped, or corroded screws at the original mounting points
- Helps eliminate rattling, vibration, or loose handles/covers
- Addresses situations where a screw will not tighten or backs out during use
What's included: 1 truss head tapping screw Install notes:
- Disconnect power; shut off water/gas if applicable before servicing
- Align parts and hand-start threads to avoid cross-threading
- Tighten until snug; do not overtighten to prevent stripping
- If the receiving hole is damaged, for repair before installing the new screw
Do-It-Yourself Stories from Customers like You
Broken door handle on lg over range microwave William M. • Town Creek , AL • June 29, 2017
Removed old broken door handle per video link on AppliancePartsPro.com. Installed new handle with no issues. <10 minute job at best.
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$11.45
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$13.63
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$2.18
Genuine Lg part
By: Lg
Part Number: 6930W1A003K
This thermostat controls oven/dryer temperature by opening or closing its contacts as the appliance reaches set temperatures, helping maintain safe and consistent operation. Replaces a worn or failed thermostat to restore proper temperature regulation. What it does:
- Senses temperature and interrupts heating when limits are reached to prevent overheating
- Re-establishes heating when temperature falls, maintaining normal cycle performance
- Commonly installed when an appliance won't heat, overheats, or cycles erratically
- Works as a direct replacement for the OEM thermostat designed for compatible LG units
What's included:
Install notes:
- Disconnect power to the appliance before starting any repair to avoid shock or injury
- Note wire locations or take a photo before removing wiring; reconnect wires to the same terminals
- Use a multimeter to verify thermostat continuity and correct operation before and after replacement
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$9.02
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$9.92
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$0.90
Genuine Lg part
By: Lg
Part Number: 0CZZW1H004C
$29.95
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$35.64
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$5.69