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LMS1720TW (AWHEGSC) LG Range - Overview

Sections of the LMS1720TW

[Viewing 6 of 6]
Keep searches simple, eg. "belt" or "pump".
Time Delay Fuse – Part Number: 3B74133Q
Time Delay Fuse
★★★★★
★★★★★
(3)
PartSelect #: PS3522743
Manufacturer #: 3B74133Q
The fuse-time delay may also be known as a line fuse or a microwave fuse, and it is a piece for your microwave. The function of this part is to shut off the microwave if there is a power surge, in ord...
$11.77
  In Stock
Order now and your part arrives by Apr 6
Microwave Screwtapping – Part Number: 1TTL0402818
Microwave Screwtapping
★★★★★
★★★★★
(1)
PartSelect #: PS3517555
Manufacturer #: 1TTL0402818
$13.92
  Special Order
High Voltage Diode – Part Number: 6021W3B001V
High Voltage Diode
★★★★★
★★★★★
(2)
PartSelect #: PS3528799
Manufacturer #: 6021W3B001V
$17.15
  In Stock
Order now and your part arrives by Apr 6
Switch,Micro – Part Number: 3B73361E
Switch,Micro
PartSelect #: PS3522736
Manufacturer #: 3B73361E
This is a micro switch, but you may also know it as a door switch and it is compatible with your microwave. The function of the micro switch is to communicate to the electronic control board of your a...
$21.45
  Special Order
Capacitor – Part Number: 0CZZW1H004B
Capacitor
PartSelect #: PS3517241
Manufacturer #: 0CZZW1H004B
Discover the essential part for your LG microwave oven: the High Voltage Capacitor. This genuine OEM item from LG is specifically designed for certain models of microwave ovens. The high-quality capac...
$43.18
  On Order
Turntable Assembly – Part Number: 5889W1A003A
Turntable Assembly
PartSelect #: PS3528533
Manufacturer #: 5889W1A003A
  No Longer Available
Screw,Taptite – Part Number: 1SBF0402418
Screw,Taptite
PartSelect #: PS3517460
Manufacturer #: 1SBF0402418
$13.92
  Special Order
Screw,Tapping – Part Number: 1TTL0402418
Screw,Tapping
PartSelect #: PS3517549
Manufacturer #: 1TTL0402418
$11.77
  In Stock
Order now and your part arrives by Apr 6
FILTER ASSEMBLY – Part Number: EAM62951702
FILTER ASSEMBLY
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★★★★★
(1)
PartSelect #: PS12581203
Manufacturer #: EAM62951702
  No Longer Available
SCREW,TAPPING[TRUSS HEAD] – Part Number: 1TTG0402422
SCREW,TAPPING[TRUSS HEAD]
PartSelect #: PS3517545
Manufacturer #: 1TTG0402422
$13.92
  In Stock
Order now and your part arrives by Apr 6
Lamp,Incandescent – Part Number: 6912W3B002G
Lamp,Incandescent
PartSelect #: PS3530417
Manufacturer #: 6912W3B002G
  No Longer Available
Magnetron – Part Number: 6324W1A001B
Magnetron
PartSelect #: PS3529029
Manufacturer #: 6324W1A001B
  No Longer Available

Questions And Answers for LMS1720TW

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Common Symptoms of the LMS1720TW

[Viewing 2 of 2]
No heat
Fixed by
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Won’t turn on
Fixed by
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Microwave operated but did not heat
Initial failure of over range microwave Aug 3rd. Control Panel worked but no heat. Took to local LG authoriaed local repair place. They fixed it quickly and we re-installed it. Worked fine for 2 months then had similar failure again. Agaim took to same authorized repairer. They kept unit for 3 months but finally concluded theu could not fix it and suggested we contact LG for a partial refund. When they tested the unit during re-assembly in my presence, there was a blue flash and the fuse blew. Since we had built a custom tile mural back splash around this unit, I brought it home, ordered a number of time delay fuses new capacitor and two new high voltage diodes. However, using my Fluke DMM, I checked the existing capacitor and high voltage diode and they checked OK so I just replaced the time delay fuse. The high voltage transformer leads had 2 possible ways to connect to capacitor and diode. Tried one way, plugged unit in and turned it on, and immediatly blew the fuse. Replaced the fuse and reversed the high voltage transformer connections,amd turned unit pn, and it worked perfectly. Since we had experienced several power failures during the time of the original failure, the repairer concluded that power spikes might be at fault, so I also purchased a TrippLite ISOBAR4ULTRA 3300 Joule surge protector between wall outlet and microwave, and re-installed over range. It has worked perfectly since.
Parts Used:
Time Delay Fuse
  • Donald from Oak Ridge, TN
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Screw drivers
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