LMV2257ST LG Microwave Oven Combo - Overview

Sections of the LMV2257ST

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Vent Grille - Black – Part Number: MDX61912701
Vent Grille - Black
★★★★★
★★★★★
(10)
PartSelect #: PS3535252
Manufacturer #: MDX61912701
This is replacement vent grille or vent grill for your microwave. You will find the grill vent either above or below the microwave door, depending on your model. If your vent grill is discolored or cr...
$74.59
  In Stock
Microwave Thermostat – Part Number: 6930W1A003X
Microwave Thermostat
★★★★★
★★★★★
(4)
PartSelect #: PS3530468
Manufacturer #: 6930W1A003X
$32.64
  In Stock
Light Bulb - 120V 30W – Part Number: 6912W1Z004B
Light Bulb - 120V 30W
★★★★★
★★★★★
(3)
PartSelect #: PS3530415
Manufacturer #: 6912W1Z004B
$20.95
  In Stock
Charcoal Filter – Part Number: 5230W1A003A
Charcoal Filter
★★★★★
★★★★★
(4)
PartSelect #: PS3527523
Manufacturer #: 5230W1A003A
This is an authentic LG charcoal filter for your microwave, sourced directly from the manufacturer. It is designed to remove odors from the air that circulate through your microwave vent. It measures ...
$52.40
  In Stock
Microwave Locker – Part Number: MFG61979001
Microwave Locker
★★★★★
★★★★★
(7)
PartSelect #: PS3535540
Manufacturer #: MFG61979001
This catch lock is designed for use with slide-out microwave oven hoods and plays a crucial role in securing the hood in place. If the lock is broken or malfunctioning, it may prevent the microwave do...
$48.07
  In Stock
Microwave Grease Filter – Part Number: 5230W1A012B
Microwave Grease Filter
★★★★★
★★★★★
(1)
PartSelect #: PS3527528
Manufacturer #: 5230W1A012B
Sold individually.
$18.65
  In Stock
Air Duct Bracket – Part Number: 4810W1A151A
Air Duct Bracket
★★★★★
★★★★★
(1)
PartSelect #: PS3523851
Manufacturer #: 4810W1A151A
This bracket holds the metal or plastic flapper that closes off the exhaust duct when the fan is not running and opens when the fan turns on. If the exhaust fan on your microwave does not appear to be...
$26.92
  In Stock
Microwave Damper – Part Number: 4900W1A001B
Microwave Damper
★★★★★
★★★★★
(2)
PartSelect #: PS3524148
Manufacturer #: 4900W1A001B
This metal vent damper door closes off the exhaust duct when the fan is not running to stop outside air from entering the microwave unit, and opens when the fan turns on to allow air to vent away from...
$17.85
  In Stock
Microwave Glass Tray – Part Number: MJS47373302
Microwave Glass Tray
★★★★★
★★★★★
(4)
PartSelect #: PS12082158
Manufacturer #: MJS47373302
$77.55
  In Stock
Base Plate Trim – Part Number: MCR62347202
Base Plate Trim
★★★★★
★★★★★
(2)
PartSelect #: PS3535077
Manufacturer #: MCR62347202
This part is the replacement base plate trim, also known as the front décor for your microwave. It is gray in color and is approximately 30 inches long and 1 ½ inches wide. The base plate trim forms a...
$143.72
  In Stock
Mounting Plate – Part Number: 3300W0A045A
Mounting Plate
PartSelect #: PS7784808
Manufacturer #: 3300W0A045A
This mounting plate is a manufacturer-approved replacement part for your microwave. The mounting plate, or bracket, secures your above-range microwave in place against the wall. To conduct this repair...
$39.96
  In Stock
Time Delay Fuse – Part Number: 3B74133Q
Time Delay Fuse
★★★★★
★★★★★
(1)
PartSelect #: PS3522743
Manufacturer #: 3B74133Q
Sold individually.
$13.24
  In Stock

Questions And Answers for LMV2257ST

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2 questions answered by our experts.
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Norm
December 25, 2024
The filter mechanism under the micro is very dirty with grease etc and I am unable to find how to release them for cleaning. Can you supply me with some written instruction to clean an or repair this part.
For model number LMV2257ST
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Hello Norm, thank you for your question. To Remove the filter, Grab the tab and pull it down and out. The Filter part number is PS12713651. Clean the filter in the sink or the dishwasher with warm water and detergent. Dry the clean filter(s) and reinstall, making sure that they lock into place. We hope this helps.

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Erica
March 30, 2025
The LED display on the door no longer works. What part do I need to replace it?
For model number LMV2257ST
PartSelect logo
Hi Erica, Thank you for your question. If the LED display on the door is not working, the PCB display assembly, part number PS12080502, will need to be replaced. We hope this helps!

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Common Symptoms of the LMV2257ST

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No heat
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Won’t turn on
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Door not closing properly
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Tray won’t turn
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Little to no heat when baking
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Doesn’t shut off
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Element will not heat
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Oven not heating evenly
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Door won’t open after self cleaning cycle
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Noisy
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Oven is too hot
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Will Not Start
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Microwave would not rotate or heat up food.
After watching a few youtube videos, I used a phillips SD to take controll pannel off to access the switches that sense when microwave door is closed. Swapped out all 3 switched and mocrowave works like new. $20 fix (shipping included)
Parts Used:
Micro Switch Microwave Micro Switch
  • Joshua from WHITE LAKE, MI
  • Difficulty Level:
    Very Easy
  • Total Repair Time:
    15 - 30 mins
  • Tools:
    Screw drivers
51 of 74 people found this instruction helpful.
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Bezel on the fan drawer scratched. Wanted to replace
Leave the unit installed. Remove 8 screws, 4 on each side of the bottom of the drawer. It is hinged on the back but front will drop down. Remove screws attached to the white slide rails but hold bezel assembly so the spring metal on each side do no break. Look in assembly from the back to front. With a long Phillips remove the screws holding the bezel on. 3 screws. Remove old Bezel. Put new on and reassemble using the reverse.
Parts Used:
Base Plate Trim
  • Edward from ESCONDIDO, CA
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
21 of 26 people found this instruction helpful.
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Vent Grille tabs snapped off
Repair was easy but you have to remove the screw at the top of the microwave (top left) in order to secure the far left tab with the hole in the tab. Place the grille in place, push to the left and then secure the screw you removed. Just remember that the mounted screw will need to be removed the next time you need access in order to replace the charcoal filter.
Parts Used:
Vent Grille - Black
  • Andy from PERRYSBURG, OH
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
18 of 24 people found this instruction helpful.
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