MA-972M LG Microwave - Overview
Models starting with MA-972M
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Time Delay Fuse
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
![SCREW,TAPPING[TRUSS HEAD] – Part Number: 1TTG0402422](https://partselectcom-gtcdcddbene3cpes.z01.azurefd.net/3517545-1-S-LG-1TTG0402422-SCREW-TAPPING-TRUSS-HEAD.jpg "SCREW,TAPPING[TRUSS HEAD] – Part Number: 1TTG0402422")
Common Symptoms of models starting with MA-972M
[Viewing 3 of 3]Won’t turn on
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No heat
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Door not closing properly
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
no light
remove the shroud. 2 types of screws. Philips and 2 specialty star screws. Then remove the light socket. 1 Philips screw. replace the socket and bulb. The bulb and socket are 1 piece. Replace the shroud.
Parts Used:
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William from MALONE, NY
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Screw drivers
2 of 3 people
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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
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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.
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Parts Used:
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Donald from Oak Ridge, TN
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Difficulty Level:Easy
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Total Repair Time:1- 2 hours
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Tools:Screw drivers
3 of 10 people
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Glass tray broke when moving
Took the tray out of the padded box, and put tray in microwave. That easy, no tools required.
Parts Used:
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Karen from Greenwood Village, CO
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Difficulty Level:Really Easy
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Total Repair Time:Less than 15 mins
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