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Micro Switch(primary)

Part Number: AP4437957
MFG Part Number: 3B73362F
Made by: LG
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$3.25 $0.52

In Stock — Ships Wednesday Guaranteed

Satisfaction Rating (1)

Questions & Answers

12 Questions & Answers

Genuine LG part. See all items in Microwave Switch.

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Cross Reference Information

Part Number 3B73362F (AP4437957) replaces 3B73362E, 6600W1K003D, 6600W1K004C, 6600W1K004F, 1325771, 6600W1K001D, 6600W1K003C, AH3522738, EA3522738, PS3522738.

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Repair Time Estimate

15-30 minutes 

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Most Interesting

The part I'm looking for is, what I would call the "start switch". When the door is being closed, the lower Latch pushes against a lever, which fell off. Guess it's part of the "start switch"? What part # would that be? Thank You Riff Tiff

Riff Tiff for Model Number LG modle #LRM126050sw


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No power to microwave. Replaced and tested both fuses, tested continuity for all switches and tested capacitor. Could it be the high voltage transformer or is it some other part? Thx.

Microwaverepair for Model Number 721.66463500


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Once the fuse is replaced, the microwave oven works fine for a while and then the fuse blows again. If I replace it again, it works fine again for a short period and blows the fuse again.

Ed for Model Number 72166463500


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Latest Questions

The microwave turns on when I shut the door, no heat, timer does not run....What part would I need to replace?

Julie for Model Number LMVM2277ST


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Microwave went through a cycle turning it self off. When closing the door it wanted to turn on but just humming only not the blower motor. The only key pad functions working are the light and exhaust. If it is the door switches can they be replaced without removing from the wall it is an above the stove model mounted to the cabinet. It may have been humming for 5 minutes before it was detected. Would this 5minutes damage anything having nothing inside it. There was a possible overheating smell coming from it.

Mark for Model Number LMV1630ST


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Microwave light and fan turns on when door is opened. I suspect a switch in the door is malfunctioning? Can you give advice on what switch (primary/secondary) I need? thanks!

Hans for Model Number kenmore microwave 721.66339


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