Problem was the upper door switch. I thought nothing should work if a switch was bad. Move the object slowly (about 2.5 cm / 1 inch per minute) around the door seal and any areas that look damaged. This video provides step-by-step repair instructions for replacing the upper and lower door switches on a GE microwave. Be sure to test both NO and NC contact sets, when applicable. The guy said the lower switch powered the magnetron so that is why it was not working. 4. They are all in the same area. Why repair a microswitch (a.k.a. Hold times are long. If the buttons do … Remove the microwave screws and take the cover out.Remove the 2 inside screws from the plastic panel where switches are snapped in. There are 3 door switches and usually the bottom one is the one that fails, but you'd need to remove the outer shell of the microwave and test the switches to know for certain which switch is bad. Rather than even thinking of re-riveting, i prefer to use a small machine screw, lockwasher, and nut. Check the multimeter for a resistance reading of zero. The meter should display 1 … Do the (red) buttons on top of the switches move up and down when the door bayonets push and release? Two switches are for the door and one for some kind of ventilation flap. Email. Some “special” microswitches are far from inexpensive. Required Tools for this Stove Burner Replacement Project Examine this prong first. Remove the built-in microwave from the wall and keep it in an open space. How To Test the Switches. 5. To test the fuse for continuity, you will need to disconnect one of its terminals and check it with multimeter. Begin by setting your ohmmeter to measure resistance at a scale of Rx1. Slide the grill to the left to release it. Disconnect the wires from the switch and pull the switch out of … Several reasons come to mind: Careful study of the construction details of the microswitch will likely be needed. We've got millions of parts, hundreds of brands, and thousands of step-by-step videos— everything you need to find it, fix it and finish the job right. To replace the upper or lower door switch in your microwave open the door and remove the screws securing the grill. Door Switch - Whirlpool W10269460. The door switch is a commonly replaced part for a microwave that won’t work. Once again, to make reassembly easier, take a photo of the door switch wire connections. When closing the door the multimeter should produce a beep if the switch is good. Test both switches the same. Please note that the primary and secondary switches are tested with the door open. This part works with the following brands: Frigidaire, White Westinghouse, Kelvinator, Gibson, Kenmore, Sears, Tappan, & Electrolux. “basic switch” or even “snap switch”) when they are inexpensive and readily available? Frigidaire Genuine OEM 5304509459 Microwave Door Switch. With the door open, place the multimeter leads on the connectors on the primary switch first. Connect the black lead to the other terminal on the switch. Begin by setting your ohmmeter to measure resistance at a scale of Rx1. Lift this section straight off, and one should see something like this: In the Micro Switch® V3 design, nothing “boinks out”: every part of the switch mechanism is visible and stays in place. It would be a good idea to put your ohmmeter (or equivalent) on the switch and test each set of contacts before returning the switch to service, to ensure that the cleaning job was successful. If you are using an analog meter, touch the metal tips of the test leads together and zero your ohmmeter by adjusting the thumbwheel in the front of the meter until the needle reads '0' on the scale. It can be a fun and rewarding experience! Microwave Door Interlock Switch W10727360(3 Terminal) & WB24X830 & WB24X829 by Primeswift Replacement for SZM-V16-FC-61 SZM-V16-FD-62 SZM-V16-FA-63 4.4 out of 5 stars 193 $9.99 $ 9 . Activate the switch to remove contact pressure, then pull out the normally closed contact/connector. Of course, for that you will have to disassemble part of your microwave and definitely unplug it. They may test good one minute and then look bad the next. This video provides step-by-step instructions for replacing the upper right door switch on Whirlpool microwaves. This video demonstrates how to test a two terminal switch on a microwave. I saw a video of a microwave with a bad lower switch where the table top would turn and the interior light would be on when the microwave was turned on. Next, remove the screw on the left securing the control panel and loosen the screw behind the panel. Micro Switch® brand standard-size switches like the V3 and V7 (and other) series are held together by one rivet. When a switch … https://www.partselect.com/PS4131192-Samsung-3405-001034-Micro- Pull out the normally open contact/connector. Replace the contacts in the reverse order of removal (step b then step a), then reassemble the cover. Below is a link to a video that shows you how to test the actual door switches inside your microwave to know which one to replace. Then remove the wires from both of them and using an ohmmeter, check the switches. Microwave won’t work? Connect the red lead to one of the terminals on the switch. Put the switch into the ON position. It would be a good idea to put your ohmmeter (or equivalent) on the switch and test each set of contacts before returning the switch to service, to ensure that the cleaning job was successful. With the door open, place the multimeter leads on the connectors on the primary switch first. I think this microwave is probably headed to the landfill . How to check a microwave door switch: Why repair a microswitch (a.k.a. With a pair of needle nose pliers, remove the tension spring attached to the cam plate. Microwave won’t work? 6. The door switch attaches behind the front panel of the microwave and makes contact with the door hook when the door closes to allow the microwave to heat. U.S. #2 size or metric 2mm size hardware should work. Lift the door switch housing up and out of your microwave. Clean each contact surface with your preferred cleaner. Start doing it yourself with the confidence that comes with 100+ years of experience. With the ohmmeter connected, very slowly and gradually move the actuation button/lever/device: the resistance should be fairly consistent until the “click” (or silent switch throw, for some microswitches), although it is virtually guaranteed that there will be some measurable changes. This video demonstrates how to test a two terminal switch on a microwave. All thermal fuses, except the one that controls the fan motor, should have continuity. lg microwave lcrt2010st door switch, When the door is opened during a cook cycle, the monitor switch, door sensing switch, primary interlock switch and power relay are deactivated. In your microwave, each thermal fuse controls specific internal part and monitors the temperature increase and decrease of that component. Tap the switch: the resistance reading should change little, if at all. If you don't hear a click or get a resistance reading other than zero, the … Drilling the back end crimp off the rivet (a standard technique for removal of this sort of rivet) will allow the rivet to be removed: On most designs, the switch “half” on the side with the rivet head(s)(opposite the side drilled out, and usually with the electrical specifications) is far less than half the thickness. Wild jumping with or without tapping indicates more cleaning is needed. Other commonly replaced parts for a microwave that won’t work: Line fuse … Press the switch's actuator until you hear a click. Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! Set the multimeter to OHMS to test the three 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. Already ordered? Found it by opening up the cabinet, removing the display panel (1 screw and a couple of plugs) and testing all three micro switched with a meter. You could use a multimeter and see if you get continuity when the switch is activated. Hello Debra, Thank you for your inquiry. I would check the door switches, part# W10727360 and part# W10269458 are the upper switches, and part# W10269460 is the lower switch. If the meter reading remains the same, the infinite switch is bad and should be replaced (Photos 3 and 4). Nevertheless, the parts can fall out, so care is required. Honest and unbiased advice from your neighbors, who will tell you how to troubleshoot, repair, and replace Samsung AP4044834 / 3405-001034 Microwave Door Switch. Go to page 40, and perform the test for the interlock switches. When closing the door, the multimeter should produce a beep if … The diagram below is typical:These microswitches arent the most robust switches ever made and can be down right squirrely. Use your ohmmeter to test your switch for continuity. You state the "bottom door switch" measures NC, but did you test when the door is opened? Hold the light bulb or tester at least 5 cm (2 inches) away from the surface of the microwave, including the handle. Most microwave ovens have three safety microswitches in the door latch assembly. If the switches are working properly you should have continuity between the two terminals with the microwave door closed it should and it be an open circuit (no continuity) with the door open. As always, this is a microwave and carries quite a … Please note that the primary and secondary switches are tested with the door open. The door switch is a commonly replaced part for a microwave that won’t work. The microwave's power decreases rapidly with distance. Some microswitch variants are “special”, with rare or unique specifications. Repairing a microswitch vs. buying a new one reduces waste. 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