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.
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Troubleshooting
This part fixes the following symptoms:
No heat | Won’t turn on | Doesn’t shut off | Tray won’t turn
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Vincent
21 days ago
Microwave LG. when I close the microwave door I hear a Humming noise,
For model number MV 1511 M
Hello Vincent, thank you for the question. The issue is probably due to the magnetron, part number PS3529035. We hope this helps!
My microwave works as do the lights, It heats correctly and the time works. Lately, after th timer goes off and the unit stops, it starts again when I open the door. I was told the microswitch replacement would fix that, but reading the description of the function of that switch, I am not sure if that is the correct switch to replace? Any opinion?
For model number JVM1631BJ 03
Hi Ken, thank you for reaching out. Based on the description that you have provided, we would recommend checking the switch monitor interlock, part number PS11766871, to fix this issue. We hope this helps!
My microwave just stopped working mid cooking. This happened about 2yrs ago, and it would come back on after about 15 minutes. This went on for about 3 days and then it never came back until now. Is the switch the answer?
For model number LMVT2031ST
Hello Sheri, thank you for your inquiry. Based on the description that you have provided, we would recommend checking the door switch, part number PS3598699, to fix the issue. 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. We hope this sorts out your problem!
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Customer Repair Stories
Average Repair Rating: 3.8 / 5.0, 15 reviews.
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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)
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.
JAMES from BILLINGS, MT
Difficulty Level:
Very Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
25 of 36 peoplefound this instruction helpful.
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Microwave would not power up.
Fun and easy fix for my kids.
The countdown timer was working but no "cooking" happening. Did not hear the familiar sound of the heating part working.
Determined it might be some simple switches for under $15 dollars. Bought one of each. They allow the microwave to turn on/activate by signaling that the door is properly latched. My wife noticed that it was failing and then failed over the course of about a day. Several times where it worked, then did not work. The timer was counting down one time and then when she opened the door the microwave heating component turned on. Guess it had activated the switch as she was opening the door.
Procedure to repair - Unplug - Remove two screws on front top - allows you to remove the vent. Realized there was a charcoal filter there that I had never replaced so ordered that after the fix. - Remove two screws to pull off the front right panel (area where your microwave buttons are) One at the top under the before mentioned vent and one under the microwave on the far right corner. - Have someone hold the panel because wiring is to short to place it on a ledge while connected or take a picture and remove connections. I simply held it while my daughter undid the micro switches. - Carefully remove micro switches. There were two "orange" button ones so I chose the top one to replace along with the green button one that I had ordered, so I simply pulled an orange from the bottom and a green from the top latch area. You may have remove the part that holds the switches since it was a little tough with the wires in the way and not knowing how the switches stay put. - plug in new switches and place in the brackets that hold them in place - reverse everything you did. Viola - a working microwave vs purchasing a brand new for several hundred dollars or having to call in a technician.I love that my young kids did this project with me and we actually got it running. Don't like to have to throw away more items at the landfill.
tested all 3 of the door switche for continuity, the top switch was faulty, replaced it,for approx $4.00 and saved a $350 dollar microwave.
Joseph from N VERSAILLES, PA
Difficulty Level:
Very Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
8 of 16 peoplefound this instruction helpful.
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Door sensor switch went bad. Microwave would not operate.
Watched a couple of repair videos on Youtube by searching for the model number. Found out what to do in order not to get shocked by the powerful capacitor. Ordered the two switches (To be sure, I could have ordered a third switch as suggested in the videos.) Bought a tamper-proof star bit to get the cover off. Followed the directions to replace the switches. - I broke the harness and had to use some super glue, but it's all good. I should have removed the harness instead of trying to get a switch out while it was still in place. It's all back together, and the wife is happy!!
Randall from ARCADIA, CA
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers
5 of 9 peoplefound this instruction helpful.
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Microwave would not heat anything and turntable no longer turned.
I decided the door switch was the problem because 2 problems happened at the same time. I removed the 4 screws for the top outside cover and the 1 screw that held the control board. After removing the control board screw, I lifted it up and removed it. This gave me access to the 3 door switches. I then removed the 2 screws that held the plastic piece that holds the switches. This made it easier then to replace the switches.
When the MW door was opened a fan would start running. Close the door the fan would go off.
Removed the MW from the wall. Took the top screws off the air vent. Then removed the two screws holding on the display. I then moved the display to its side and it revealed the micro switches. I removed the plug in leads from the micro switch one at a time. I did this with all three micro switches only one at a time. I reinstalled everything and plugged it in. No more fans starting when the door is opened.
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.
the turn table no turn and no heat the food. but the bottom oven worked
well I unplugged the microwave one day prior to working on it. shock precaution smart way to do this job. very easy pullout the screws behind the unit pull off the outer casing. minor screws inside the unit you have to remove a couple things out of the way. unplug the magnetron and remove first gives you more room to work on the side panel to replace the micro switches. I only replaced one the bottom micro switch. only one bad, but since I was in there I clean the bulb and changed the magnetron any ways. I read other reviews and made my choice to do so. it works perfectly now. Thanks PartSelect for having parts.
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Sorry, we couldn't find any existing reviews that matched. Try using some different or simpler keywords.
★★★★★
★★★★★
Rick O - September 14, 2022
Verified Purchase
Perfect replacement for microwave door switch
The switch was a different color (black) than the picture on the web site, but it actually matched the old broken one. The new one fit right in and has been working great. The price was a bit hefty, but I couldn't find the part anywhere else.
★★★★★
★★★★★
Jon S - August 25, 2021
Verified Purchase
Microwave oven switch
Tried some cheap switches that would last a few days before failing.
Bought a more expensive switch from PartsSelect. Much sturdier than the others.
It has been in the microwave for more than a week. I think it will last a long time.
★★★★★
★★★★★
Michael H - August 26, 2020
Verified Purchase
Easy repair part worked as expected
I could not locate the part using the microwave model number but this part came up at the beginning of the web site and it looked identical to the broken one I had so I took a chance and ordered it and it fit and worked fine and the microwave is working again.
★★★★★
★★★★★
Luis B - May 19, 2020
Verified Purchase
Great part
Easy fix
★★★★★
★★★★★
Bill M - October 7, 2019
Verified Purchase
Relatively easy repair.
Microwave would run with the door opened. Installed new switch and she is good to go!!!!
★★★★★
★★★★★
Darrell S - August 15, 2019
Verified Purchase
worked as expected
good service, good part.
★★★★★
★★★★★
Al D - April 25, 2019
Verified Purchase
Microwave Oven Repair
The micro switch arrived in good condition and worked perfectly. I was especially impressed with the rapid delivery. The extra charge for shipping was well worth it since the microwave was out-of-service for less than 24 hours.
★★★★★
★★★★★
Ray M - April 16, 2019
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!
★★★★★
★★★★★
Mark C - March 20, 2019
Verified Purchase
Easy Installation
Great parts, easy install...
Thank you!
★★★★★
★★★★★
Jerry S - March 12, 2019
Verified Purchase
worked as expected
replaced micro switches in a LG microwave. a little difficult to do on our model. Need a security star screw driver bit to remove the cover and also some difficulty to remove and reinstall the switch board. Results good, microwave works.
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