Lg Wall Oven MT4155SPB Parts
Genuine Lg part
By: Lg
Part Number: 3B74133Q
The Time Delay Fuse is an OEM part for LG microwaves. This fuse provides a safety mechanism by delaying the flow of electricity, protecting the microwave's electrical components from power surges and ensuring the appliance operates safely. It helps to prevent immediate damage in the event of a power surge or electrical fault, thus prolonging the lifespan of the microwave.
Over time, the time delay fuse can become damaged due to electrical surges, wear and tear, or faulty connections. If the fuse blows, it can disrupt the microwave’s ability to function correctly.
Symptoms of a bad time delay fuse include:
- The microwave not turning on
- No response from the microwave control panel
- The microwave stopping unexpectedly during operation
- Electrical issues or blown circuits in the microwave
This OEM LG part is also compatible with Sears/Kenmore models.
Do-It-Yourself Stories from Customers like You
Lg microwave oven did a loud pop and quit working Stephen C. • Cape Coral , FL • March 18, 2015
Called AppliancePartsPros because of good experiencing diagnosing problem with a dishwasher repair. We definitely are modest income amateurs! Same excellent response to our questions. Three possible causes. Used easy search menu to fine replacement parts. Bought all three, knowing that if all not needed, the others could be returned (within 365 days) for refund. Replaced the capacitor successfully after calling to get more help with a couple of places where we got stuck. Oven now works...
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$11.78
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$13.90
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$2.12
Genuine Lg part
By: Lg
Part Number: 6324W1A001L
Microwave won't heat but runs normally? A failed magnetron is the likely cause. This part generates the microwaves that cook food. Moderate DIY repair.
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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$130.69
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$24.83
Genuine Lg part
By: Lg
Part Number: 4970WRA001G
Microwave door won't stay closed or latch? This door latch spring provides tension to secure the door shut. DIY repair in under 10 minutes with video help.
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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$10.58
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$11.64
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$1.06
Genuine Lg part
By: Lg
Part Number: 6600W1K001C
The Interlock Door Switch is an OEM part for LG microwaves. It is a safety component located on the door of the microwave designed to prevent the microwave from operating unless the door is securely closed. The interlock door switch works with the microwave's electronic control board to sense when the door is open or closed and allow or disallow operation accordingly.
Causes of a bad interlock door switch can include normal wear and tear from repeated opening and closing of the microwave door over time.
Symptoms of a bad interlock door switch include:
- The microwave runs or heats with the door open
- Error codes or diagnostic messages related to door sensors on the control board
- The microwave fails to operate even when the door is securely closed
This OEM LG part is also compatible with some Sears/Kenmore microwaves.
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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$20.95
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$25.14
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$4.19
Genuine Lg part
By: Lg
Part Number: 6021W3B001V
Microwave won't heat or makes loud buzzing noise? The diode regulates magnetron current flow. Simple repair—test with multimeter for continuity.
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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$20.17
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$3.22
Genuine Lg part
By: Lg
Part Number: 4370W1A006B
Microwave turntable not rotating or making popping noises? This coupler connects the motor to the glass tray. Simple DIY fix takes under 15 minutes.
Do-It-Yourself Stories from Customers like You
Turntable stopped sporadiclly Billie L. • Colorado Springs , CO • October 16, 2017
Replaced turntable motor and coupler
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$3.22
Genuine Lg part
By: Lg
Part Number: 4026W2A016A
Microwave runs with door open or won't start? A faulty door latch prevents the interlock switches from engaging. This replacement latch restores safe operation.
Do-It-Yourself Stories from Customers like You
The door latch broke when the kids were fighting over the microwave Bart M. • Clarksville , TN • August 29, 2014
Determined which part was broken and entered the model number into the search window. My part was on the list of available parts. Thanks AppliancePartsPros.com!
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$11.95
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$14.22
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$2.27
Genuine Lg part
By: Lg
Part Number: 6600W1K001D
Fix a microwave that won't start or runs with the door open. This door interlock switch ensures safe operation by detecting when the door is fully closed.
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$25.48
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$4.07
Genuine Lg part
By: Lg
Part Number: 0CZZW1H004C
Microwave not heating or sparking inside? This high voltage capacitor stores power for the magnetron. Common repair taking 30-45 minutes with care.
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$5.69
Genuine Lg part
By: Lg
Part Number: 1TTG0402422
This is a truss-head tapping screw used to secure trim, panels, and small assemblies on compatible LG appliances. It provides a low-profile, wide-bearing head that helps hold parts flush and resist pull-through. What it does:
- Fastens plastic and sheet-metal components where a self-tapping thread is needed
- Truss head spreads load to prevent damage to soft or thin materials
- Helps secure control panels, brackets, or trim pieces that require a low-profile head
- Common replacement when original mounting screws are missing, stripped, or corroded
What's included:
- One truss-head tapping screw
Install notes:
- Use the correct screwdriver bit and moderate torque to avoid stripping the screw or workpiece
- Start threading straight and let the screw form threads without forcing at an angle
- Disconnect power and follow appliance-specific service safety procedures before working internally
- Replace any damaged mating threads or clips for a secure fit
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$1.06
Genuine Lg part
By: Lg
Part Number: 4B70188C
This is a replacement screw used to secure appliance components and panels. It restores proper fastening where a stripped, missing, or damaged screw causes loose parts or rattling. What it does:
- Fastens panels, trim, or internal components to maintain structural fit
- Helps stop vibration-related noise from loose assemblies
- Replaces missing or corroded screws that prevent proper closures
- Restores secure mounting after repairs or disassembly
What's included: One screw Install notes:
- Use the correct screwdriver or bit to avoid stripping the head
- Tighten until snug—do not over-torque to prevent thread damage
- Keep small parts away from children and pets
- Disconnect power or water before accessing internal parts
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$1.06
Genuine Lg part
By: Lg
Part Number: 1TTL0402416
Mounting screw for microwave installation and panel assembly. Replace if stripped, missing, or damaged during maintenance. Essential hardware component.
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$1.06
Genuine Lg part
By: Lg
Part Number: 3302W0A036E
Base plate for microwaves. Installs at the bottom of the unit to provide structural support. Replace if cracked, warped, broken, or missing.
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$128.76
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$3.88
Genuine Lg part
By: Lg
Part Number: 1B71961H
Replaces a cracked, chipped, or broken glass turntable tray inside your microwave cavity. Typically damaged during cleaning or accidental impacts.
Do-It-Yourself Stories from Customers like You
Burnt out Kenmore microwave light. Timothy E. • Wilmington , DE • May 11, 2018
Pretty easy fix. Took out 7-8 screws to remove cover for access to light. 2 were security type screws so I had to run to the hardware store to buy a special screwdriver. One screw to remove the bulb.
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$38.95
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$46.74
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$7.79
Out Of Stock
Usually ships within 4 - 14 days
Genuine Lg part
By: Lg
Part Number: 1TTL0402818
Truss head tapping screw secures panels, brackets, and covers in appliances. Replaces missing or damaged fasteners to restore snug fit and alignment.
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
Out Of Stock
Usually ships within 4 - 14 days
Genuine Lg part
By: Lg
Part Number: 3536W1A004A
$10.58
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$11.64
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$1.06
Out Of Stock
Usually ships within 4 - 14 days