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Micro Switch – Part Number: 3B73362F
Micro Switch – Part Number: 3B73362F https://partselectcom.azureedge.net/Schematics/LG/107333-4.gif

Micro Switch

7 Reviews
Your Price
$5.73
In Stock

Get this part fast. Average delivery time via standard shipping: 1.8 days.

PartSelect Number PS3522738

Manufacturer Part Number 3B73362F

Manufactured by LG

This microwave door switch provides power to the various components in the microwave when the door is in a closed position, and interrupts power when the door is open. This door switch is approximately 1 1/2 inches long, and has 2 metal prongs called terminals that extend from its body. If your microwave will not turn or heat properly, there could be an issue with the door switch. You can check the switch for continuity using a multi-meter. With the actuator button depressed, you should see continuity between these terminals. If there is no continuity the switch will need to be replaced. NOTE: Before you begin this repair, first make sure your microwave is unplugged, and that your capacitor is discharged. A capacitor stores large amounts of electricity even when your microwave is unplugged.

This part works with the following brands: LG, Kenmore, Whirlpool, General Electric, Amana, KitchenAid, Jenn-Air, Panasonic, Frigidaire, Magic Chef, Crosley, Estate, Bosch, Gaggenau, Thermador

This part works with the following products: Microwave, Microwave Oven Combo

This part fixes the following symptoms: No heat | Won’t turn on

Questions & Answers
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Michael
November 29, 2018
Where do i find the part number on the door switches? And will this solve a problem of no heat and no turntable?
For model number MH6150XMQ
Hi Michael, Thank you for your question. The part number listed under your model number for the door interlock switch kit is PS373050. When your microwave turns on but does not heat up, it may mean the door switch is broken. The door switch signals other microwave components to supply power when closed, and to stop heating when open. The door switch can also be called an interlock switch. When this part doesn’t work, the fan and stirrer motors may still function, which makes your microwave look like it is working. If the microwave is not heating you also need to check the magnetron. I hope this helps. Thank you and have a great day!

2 people found this helpful.

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Sharon
May 2, 2019
My microwave will run for 2-3 min. And shut off. Regardless of the time entered/
For model number 790.80333310
Hello Sharon, Thank you for the question. This sounds like an issue with the main PC Board, PartSelect Number PS9865010. I looked up the part and it is listed as No Longer Available/Discontinued. There is no part substitutions listed. My suggestion here would be to call the manufacturer and see if they can provide you with a substitution for these part numbers. Hope this helps!

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Related Parts: PC BOARD
Tom
23 days ago
Our microwave door opening button is inoperable. The door latches are fine. The microwave functions normally except for the door opening button. Is this switch the correct replacement part to repair the door opening button?
For model number KCMS1555R
Hello Tom, Thank you for contacting us. I have researched the model you have provided and have found the push button is discontinued. I suggest checking the latch bracket, Part #: PS11745265 and the spring PartSelect Number PS11742286. The push button does not have a electrical switch to operate it. Hope this helps!

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Related Parts: Door Latch Bracket Spring
Installation Instructions Provided by PartSelect customers like you.
Average Repair Rating: 4.3 / 5.0, 2 reviews
What's this?
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
JAMES from BILLINGS, MT
Difficulty Level:
Very Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
3B73362F
Broken door micro switch. (unit does not start heating)
Unplug the unit before servicing. Need phillips screwdriver. Open door. Use step ladder to access and remove 2 small screws from top of the room air diffuser at top of unit. Slide diffuser slightly to the left to align the diffuser's plastic tab on the left side to rotate toward you. (The wires for the front control panel are at the far left side of this difuser, but difuser is slotted for easy removal). Once the difuser is removed you will see 1 screw at the top that secures the pannel cover on the left side of the unit. Remove screw and slide this panel slightly up and out. This exposes the plastic frame that holds the upper and lower door switches. To locate the door switches and observe how they work, close and open the door and watch the door (bayonets) open and close the micro switches. Do the (red) buttons on top of the switches move up and down when the door bayonets push and release? If the buttons do not "pop" up when opened the switch is defective. The switch frame is secured with 2 screws. Remove screws and rotate the unit out for easy access to the micro switch(s). The internal (spring?) on my unit that is suposed to allow the red (visible) button on top of the switch to "pop" up when the door is opened was broken. Carefully pry the switch outward while being careful to lift the plastic holder-piece that holds the switch in place. Be careful, there is a small pin on the frame, so rotate the switch OUT toward you while lifting (carefully) the plastic holder-piece (you will see it on top of the switch). You can use an ohm meter to test the continuity of the switches. But if the buttons don't "pop" they are defective. Replace switch and reassemble.
10 of 16 people found this instruction helpful.
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LESTER from FOREST HILLS, NY
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
5020W2A134A, 4B72023A, 3B73362F
not all control buttons worked, including button for the light under the microwave
1.Disconnected microwave from power 2.Put spring into middle round opening of the button compartment 3.Snapped in new button. So far 20 second job! 4. Removed front control panel from the microwave. Located Micro Switch,(on the left side connected with two snap-in wires).Pull out wires, pull out the switch. Replaced faulty switch with the new one. Snapped in two wires. Very easy. However, need short 2" philip screwdriver to be able to unscrew screw holding the old switch. Few minutes job! 5. Attached front panel. 6. Connected microwave back to power. Problems gone all work fine.
2 of 2 people found this instruction helpful.
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Customer Reviews
Average Rating:
7 Reviews
3.7
out of 5
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Sort by:
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
5
-
Verified Purchase
Micro switch arrived in 6 days and was installed in ten minutes.

Micro switch arrived within a week. Took only 10 minutes to replace. The microwave no works perfectly. A replacement microwave would have cost over $300. Very happy customer!

5
-
Verified Purchase
Door Switch Fixed Problem

New door switch fixed the issue with my micro wave.

5
-
Verified Purchase
Easy Repair

Everything went ok

5
-
Verified Purchase
Micro switch

Perfect replacement, easy to replace.

4
-
Verified Purchase
Great part which worked as expected. but...

The part came in time and my LG Microwave is in good working order now. Two comments: Shipping and handling costs more than the cost of the micro-switch itself. Secondly: I had to get my electrician to come and replace the switch since the old switch would not easily pop out. All in all I am happy that I don't have to buy a new Microwave!!

1
-
Verified Purchase
recommed part did not fix problem

I installed this part that you told me would fix my microwave oven. I plugged it in and turned it on , when I opened the door the fan and light came on as before. This part didn't fix the problem !

1
-
Verified Purchase
No luck

Never got it. Fedex is starting an investigation. They haven't even given me any feedback about anything yet. Its been 3+ weeks. Still can't use my microwave.

April 16, 2019
Hello Ray, Thank you for leaving a review on the part ordered. I have sent you an email in regards to the order. Hope to hear from you!

Model Cross Reference

This part works with the following models:

PartSelect Number: PS3522738
Manufacturer Part Number: 3B73362F
Brand
Model Number
Description
LG
2263672
Microwave - LG Microwave Model 2263672 Parts
LG
2263674
Microwave - LG Microwave Model 2263674 Parts
LG
2263679
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2263692
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2263693
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2263694
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2263699
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LG
295
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Kenmore
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Kenmore
295.89999
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60102
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60109
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61283
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61289
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62464
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62469
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62482
Microwave - LG Microwave Model 62482 Parts
Kenmore
62622200
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LG
62643
Microwave - LG Microwave Model 62643 Parts
LG
62752
Microwave - LG Microwave Model 62752 Parts
LG
62759
Microwave - LG Microwave Model 62759 Parts
LG
62772
Microwave - LG Microwave Model 62772 Parts
LG
62774
Microwave - LG Microwave Model 62774 Parts
LG
62779
Microwave - LG Microwave Model 62779 Parts
LG
63664
Microwave - LG Microwave Model 63664 Parts
LG
64282
Microwave - LG Microwave Model 64282 Parts

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