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Bosch Microwave HMT743C Parts

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Switch,Micro
Genuine Lg part
By: Lg
Part Number: 6600W1K001Q

The Switch, Micro is an OEM part for LG microwaves. This micro switch is crucial for the operation of the microwave door mechanism, ensuring that the microwave only operates when the door is securely closed.

Causes of a bad micro switch can include wear and tear from frequent use, damage due to electrical faults, or physical impact that disrupts its functionality.

Symptoms of a bad micro switch include:

  • The microwave not starting or stopping unexpectedly
  • The door not latching properly
  • The microwave light not turning on or off correctly
  • Error messages appearing on the control panel

This OEM LG part is also compatible with Sears/Kenmore models.

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... Read more

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$12.54
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Microwave Door Interlock Micro Switch
Genuine Bosch part
By: Bosch
Part Number: 00614767

This is a micro switch used in the microwave door interlock system. It detects whether the door is properly closed and signals the control board to allow or prevent microwave operation. Replace this switch if the microwave won't start, runs with the door open, or if the door latch clicks but the unit doesn't respond.

Do-It-Yourself Stories from Customers like You No power to unit   Kurt F. • Greenville , DE • November 05, 2019

One of the three-door switches had failed. In my case, 00631512 or ref 25217585 on the left front of the unit. The green button no longer "clicked". When that switch fails, one of the ceramic fuses located under the top cover at the far back of the unit is blown. Used Volt-Ohm meter to determine which fuse. Happy to have also ordered a replacement door switch Support, just in case, as I was unable to remove the failed switch from the support without breaking a key brittle plastic tab.... Read more

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$25.28
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Microwave Door Interlock Switch
Genuine Lg part
By: Lg
Part Number: 6600W1K001C

This is a micro switch that detects whether the microwave door is properly closed and latched. It is part of the safety interlock system that prevents the microwave from operating with the door open. Replace this switch if the microwave does not start when the door is shut, runs with the door open, blows a fuse when the door closes, or stops mid-cycle intermittently.

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... Read more

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$21.46
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$25.75
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Microwave Diode
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... Read more

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$16.95
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Microwave Turntable Motor
Genuine Lg part
By: Lg
Part Number: 6549W1S011B

Turntable stopped turning or making noise? This microwave motor rotates the glass tray for even heating. Easy DIY fix with basic tools in under an hour.

This part fixes the following symptoms
  • Tray won't turn
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Do-It-Yourself Stories from Customers like You Microwave turn table stopped rotating   Thomas T. • Willow Grove , PA • September 08, 2015

I googled the make and model, and found the part on AppliancePartsPros.com. The underside of the oven has a metal grille with numerous openings of various shapes and sizes. There is a rectangle that is punched into this grille, just below the motor. I pried between the vent holes to snap the connections near the perimeter on the punched rectangle. I only did this on three sides. Then pry up the rectangle away from the connected side. Undid the hold down screw, separated the motor from the... Read more

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$36.95
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Appliance Truss Head Tapping Screw
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. Read more

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$11.45
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Appliance Mounting Screw
Genuine Lg part
By: Lg
Part Number: 4000W4A003A

Replacement screw for securing panels, brackets, and internal components. Restores tight fit and proper alignment when original hardware is stripped or missing.

Do-It-Yourself Stories from Customers like You AC fan motor.   Tom C. • Liberty Lake , WA • September 26, 2021

Disassembled and replaced ac motor. The hardest part was to pull the microwave out of the cabinet. Read more

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Screw, Tapping, Truss Head (Single)
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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$10.58
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Thermostat (Temperature Control)
Genuine Lg part
By: Lg
Part Number: 6930W1A003A

This thermostat controls refrigerator temperature to help maintain proper cooling and prevent spoilage. It replaces a failed or inaccurate temperature control to restore consistent operation. What it does:

  • Senses internal temperature and signals the compressor to cycle on/off
  • Helps keep food at steady, safe temperatures when functioning correctly
  • Commonly replaces thermostats that cause warm temperatures or inconsistent cooling
  • Works as a direct replacement when matching the OEM part number
What's included: One thermostat Install notes:
  • Always disconnect power to the appliance before servicing to avoid shock or injury
  • Handle the sensor and terminals carefully; avoid bending or damaging components
  • Basic hand tools are typically required; follow your model's service manual for exact instructions

This part fixes the following symptoms
  • Exhaust fan not working
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$13.57
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Screw (Fastener)
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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$10.58
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Microwave Mounting Screw
Genuine Lg part
By: Lg
Part Number: 1TTL0403818

Replacement mounting screw for microwave installation and assembly. Use when original screws are lost, stripped, or damaged during service or relocation.

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Microwave Magnetron
Genuine Lg part
By: Lg
Part Number: 2B71732G

Microwave won't heat but runs normally? This magnetron generates microwave energy to cook food. Requires high-voltage safety knowledge to replace.

This part fixes the following symptoms
  • Noisy
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$99.26
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Range Wire Harness Holder
Genuine Lg part
By: Lg
Part Number: 4B72510F

This is a circular wire harness holder that secures and organizes internal wiring within the range. It clips onto the frame or mounting points to keep wires routed properly and away from heat sources. Replace this part if it is broken or missing, which can cause loose wiring or potential contact with hot surfaces.

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Screw
Genuine Lg part
By: Lg
Part Number: 4000W4A004A

 

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Relay,Contact
Genuine Lg part
By: Lg
Part Number: EBB60659001

 

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$23.36
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Microwave Button Spring
Genuine Lg part
By: Lg
Part Number: 4B72023A

Button spring for microwave control panels. Replace when buttons feel unresponsive or stick. Verify your model number for proper fit before ordering.

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  • Over 2.1 Million Parts In Stock Over 2.1 Million Parts In Stock
  • 2 Day Quick Delivery! 2 Day Quick Delivery!
  • 365 Day Return Policy! 365 Day Return Policy!
  • Repair ForumFree Tech Support!
  • Google Trusted Store Google Trusted Store