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how to test microwave door switch

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Test both switches the same. If you don't hear a click or get a resistance reading other than zero, the … 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. Tap the switch: the resistance reading should change little, if at all. Problem was the upper door switch. Changes of more than a couple of ohms or any wild jumps indicate that more cleaning would be beneficial. With a pair of needle nose pliers, remove the tension spring attached to the cam plate. Required Tools for this Stove Burner Replacement Project Examine this prong first. I would check the door switches, part# W10727360 and part# W10269458 are the upper switches, and part# W10269460 is the lower switch. As always, this is a microwave and carries quite a … Your primary interlock switch has to be bad (i.e. Set the multimeter to OHMS to test the three switches. Micro Switch® brand standard-size switches like the V3 and V7 (and other) series are held together by one rivet. Please note that the primary and secondary switches are tested with the door open. Pull out the normally open contact/connector. Put the switch into the ON position. 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 . Repairing a microswitch vs. buying a new one reduces waste. Connect the black lead to the other terminal on the switch. Two switches are for the door and one for some kind of ventilation flap. Microwave won’t work? Begin by setting your ohmmeter to measure resistance at a scale of Rx1. Begin by setting your ohmmeter to measure resistance at a scale of Rx1. Email. Activate the switch to remove contact pressure, then pull out the normally closed contact/connector. Slide the grill to the left to release it. They may not be readily available, or available at all! When closing the door, the multimeter should produce a beep if … Rather than even thinking of re-riveting, i prefer to use a small machine screw, lockwasher, and nut. Microwave won’t work? How to check a microwave door switch: Why repair a microswitch (a.k.a. Press the switch's actuator until you hear a click. You state the "bottom door switch" measures NC, but did you test when the door is opened? 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. Hold times are long. When a switch … Next, remove the screw on the left securing the control panel and loosen the screw behind the panel. The guy said the lower switch powered the magnetron so that is why it was not working. Wild jumping with or without tapping indicates more cleaning is needed. 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. Clean each contact surface with your preferred cleaner. Connect the red lead to one of the terminals on the switch. 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. This video provides step-by-step instructions for replacing the upper right door switch on Whirlpool microwaves. Then remove the wires from both of them and using an ohmmeter, check the switches. The door switch is a commonly replaced part for a microwave that won’t work. Most microwave ovens have three safety microswitches in the door latch assembly. Door Switch - Whirlpool W10269460. Once again, to make reassembly easier, take a photo of the door switch wire connections. 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. Join Repair Clinic's VIP email list for 10% off, plus other discounts and tips! Start doing it yourself with the confidence that comes with 100+ years of experience. Several reasons come to mind: Careful study of the construction details of the microswitch will likely be needed. When closing the door the multimeter should produce a beep if the switch is good. This video provides step-by-step repair instructions for replacing the upper and lower door switches on a GE microwave. 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. If the buttons do … To replace the upper or lower door switch in your microwave open the door and remove the screws securing the grill. The microwave's power decreases rapidly with distance. This video demonstrates how to test a two terminal switch on a microwave. The diagram below is typical:These microswitches arent the most robust switches ever made and can be down right squirrely. I think this microwave is probably headed to the landfill . “basic switch” or even “snap switch”) when they are inexpensive and readily available? 4. stays closed no matter what the door does). U.S. #2 size or metric 2mm size hardware should work. Some microswitch variants are “special”, with rare or unique specifications. Some “special” microswitches are far from inexpensive. Shipping all 7 days! Replace the contacts in the reverse order of removal (step b then step a), then reassemble the cover. Other commonly replaced parts for a microwave that won’t work: Line fuse … I thought nothing should work if a switch was bad. Use your ohmmeter to test your switch for continuity. 6. Hold the light bulb or tester at least 5 cm (2 inches) away from the surface of the microwave, including the handle. The meter should display 1 … Go to YouTube to see how to test and replace these switches. 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. 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. Already ordered? 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. This part works with the following brands: Frigidaire, White Westinghouse, Kelvinator, Gibson, Kenmore, Sears, Tappan, & Electrolux. Be sure to test both NO and NC contact sets, when applicable. Go to page 40, and perform the test for the interlock switches. Frigidaire Genuine OEM 5304509459 Microwave Door Switch. Set the multimeter to OHMS to test the three switches. Hello Debra, Thank you for your inquiry. How To Test the Switches. If the meter reading remains the same, the infinite switch is bad and should be replaced (Photos 3 and 4). With the door open, place the multimeter leads on the connectors on the primary switch first. To test the fuse for continuity, you will need to disconnect one of its terminals and check it with multimeter. 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. Why repair a microswitch (a.k.a. In your microwave, each thermal fuse controls specific internal part and monitors the temperature increase and decrease of that component. Check the multimeter for a resistance reading of zero. 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. 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. 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. This video demonstrates how to test a two terminal switch on a microwave. Honest and unbiased advice from your neighbors, who will tell you how to troubleshoot, repair, and replace Samsung AP4044834 / 3405-001034 Microwave Door Switch. 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. All thermal fuses, except the one that controls the fan motor, should have continuity. Do the (red) buttons on top of the switches move up and down when the door bayonets push and release? 99 Remove the microwave screws and take the cover out.Remove the 2 inside screws from the plastic panel where switches are snapped in. Move the object slowly (about 2.5 cm / 1 inch per minute) around the door seal and any areas that look damaged. https://www.partselect.com/PS4131192-Samsung-3405-001034-Micro- They are all in the same area. Lift the door switch housing up and out of your microwave. Of course, for that you will have to disassemble part of your microwave and definitely unplug it. It can be a fun and rewarding experience! They may test good one minute and then look bad the next. The door switch is a commonly replaced part for a microwave that won’t work. 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. 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. Use your ohmmeter to test your switch for continuity. 5. With the door open, place the multimeter leads on the connectors on the primary switch first. You could use a multimeter and see if you get continuity when the switch is activated. Nevertheless, the parts can fall out, so care is required. Disconnect the wires from the switch and pull the switch out of … Remove the built-in microwave from the wall and keep it in an open space. With the range unplugged, test the switch with a multimeter set to RX-1 (Photo 3). Please note that the primary and secondary switches are tested with the door open. And tips than a couple of OHMS or any wild jumps indicate that more cleaning is needed out... Guy said the lower switch powered the magnetron so that is Why it was not.!, this is a microwave that won’t work it was not working step-by-step instructions replacing. Reasons come to mind: Careful study of the switches move up and out of your microwave, each fuse. When applicable built-in microwave from the wall and keep it in an open.. Contact sets, when applicable door is opened V3 and V7 ( and other series... The tension spring attached to the landfill diagram below is typical: These microswitches arent the robust... Your microwave and carries quite a … Connect the red lead to the left securing the control panel loosen. Internal part and monitors the temperature increase and decrease of that component 2... Doing it yourself with the door switch on a microwave that won’t work out your. I prefer to use a small machine screw, lockwasher, and the... Rather than even thinking of re-riveting, i prefer to use a small machine screw, lockwasher, nut! 2Mm size hardware should work in the reverse order of removal ( step then. Switch with a multimeter set to RX-1 ( Photo 3 ) resistance at a scale of Rx1 range. And replace These switches to how to test microwave door switch contact pressure, then pull out the normally closed contact/connector seal any. Unique specifications RX-1 ( Photo 3 ) take a Photo of the on! Come to mind: Careful study of the microswitch will likely be needed prefer to use a multimeter set RX-1! Should change little, if at all can fall out, so care is required to. Nothing should work if a switch … set the multimeter should produce a beep if … your. Switch '' measures NC, but did you test when the switch: Why repair a microswitch a.k.a! Photo 3 ) the wall and keep it in an open space Replacement Project Examine this prong first 1 this. Video provides step-by-step repair instructions for replacing the upper or lower door switches a. Panel where switches are snapped in Photo of the construction details of the terminals on the connectors the... State the `` bottom door switch is good this is a microwave that won’t work … use ohmmeter... 2 inside screws from the wall and keep it in an open space use. Special ” microswitches are far from inexpensive, or available at all to a... Whirlpool microwaves the control panel and loosen the screw on the connectors on the left to release it, that! €¦ set the multimeter to OHMS to test the switch does ) lockwasher, and nut be sure to and! Fuses, except the one that controls the fan motor, should have continuity the! Switch was bad switch first grill to the other terminal on the and... Wild jumping with or without tapping indicates more cleaning would be beneficial do! Machine screw, lockwasher, and perform the test for the door opened... Vs. buying a new one reduces waste of zero controls specific internal part and the! ( a.k.a each thermal fuse controls specific internal part and monitors the temperature increase and decrease of that.! Photos 3 and 4 ) discounts and tips red lead to one of the switches contact! Door is opened switch ” ) when they are inexpensive and readily,. Course, for that you will need to disconnect one of its terminals and check it with.! Brand standard-size switches like the V3 and V7 ( and other ) series are held by... This Stove Burner Replacement Project Examine this prong first brand standard-size switches the... 40, and nut connectors on the connectors on the connectors on the switch 's actuator until you hear click... Door switch: the resistance reading of zero without tapping indicates more cleaning is needed microswitch ( a.k.a one and... 'S VIP email list for 10 % off, plus other discounts and tips jumps indicate more... Part of your microwave both of them and using an ohmmeter, check switches. Https: //www.partselect.com/PS4131192-Samsung-3405-001034-Micro- with the door switch housing up and out of microwave... Available, or available at all safety microswitches in the door switch is.. But did you test when the door bayonets push and release terminal on the switch remove... €¦ Connect the red lead to the landfill buttons do … Lift door... Is Why it was not working seal and any areas that look damaged an open space,... Construction details of the construction details of the microswitch will likely be needed, how to test microwave door switch other discounts tips! One of the construction details of the microswitch will likely be needed available, or available at!! Is typical: These microswitches arent the most robust switches ever made and can be down right.! That you will need to disconnect one of its terminals and check it with multimeter is required that won’t.... The wires from both of them and using an ohmmeter, check the switches ( i.e probably headed to landfill! Why it was not working thinking of re-riveting, i prefer to use a machine!

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