The magnetron sits inside the microwave's outer casing. In case your Magnetron is broken, it can cause another fuse of your GE microwave to blow, resulting in your … It was hard to tell if the filament winding had any resistance. Magnetron. The ignition system is the starting system for your small engine. the magnetron has two beryllium insulators on the ends, they are the colored ceramic things on it. If it isn’t in warranty, follow these steps to determine if the magnetron tube is your problem. Although the magnetron thermal cut-off switch doesn't appear to be bad because it is reading 0.10 ohms at room temperature, you do bring up an interesting question. It is powered by the electrical current supplied to the appliance and emits electromagnetic waves. Why does US Code not allow a 15A single receptacle on a 20A circuit? Check with your boat or small engine … Although the new magnetron went bad it fixed the microwave while it was working. First of all, you need to inspect the transformer visually. When this tube fails, it must be replaced; it cannot be repaired. It takes forever just to reheat lunch. There are only a few companies who make magnetrons and they … Over time the filament burns out or shorts out to the frame. ), the most likely problem is a bad magtube. Joined Nov 25, 2010 Messages 3,475. Learn how to troubleshoot like a Master Samurai Tech... MASTER SAMURAI TECH Also check that the cooling fan, if any, is working, has a free air path, and is pointed at the magnetron fins. If you peek inside and see that your plate is hitting the walls of the microwave or the turntable is off its base, either of those things could be the culprit. Access to the magnetron will require removal of the cabinet. Is it always smaller? Source: Advantium 220 microwave electrical burning smell. If everything else checks OK and the smell is kind of a sweet plastic burning smell, (I don't know how else to explain it but once you've smell it once you will know for sure the next time), then it's for sure a bad magtube. If it’s burnt looking it is bad and needs replacing. It's basically the same, but has some issues I don't like (display too far back from front, so you have … Check out the video for a test with multi-meter. Stop what you’re doing, and turn off and unplug the … Probably originates from high power radar magnetrons, which do in fact use such BeO insulators sometimes. They are totally inert if undisturbed. ; If the spark jumps the tester gap, your ignition coil is working fine. Magnetron Test Reference the image below, the beryllium oxide parts are the pink items in the middle. Add room-temperature water to the cup until it’s level with the 2 cups (470 ml) mark on the side. In most microwaves, the magnetron creates the heat. If it has an electrical leak, it … If this part fails, it’s wise to have a professional diagnose and repair the unit because it can be dangerous to make this repair. Replacing a magnetron is fairly advanced for a home do-it-yourself task. Super Contributor; Posts: 2605; Country: Re: Microwave bad magnetron? ), and you should get a new microwave. I suppose my question boils down to do I just replace the diode or are both parts bad. Even if the fan thermal switch is bad and didn't close at high temp, the magnetron cut-off should have tripped if the magnetron overheated thus … Whether you start the engine with a pull rope or the turn of a key on an electric start motor, you're relying on the ignition system to produce a spark inside the combustion chamber. Another cause of your microwave not heating up properly is broken or burnt Magnetron. I did buy a replacement microwave, but regret it. Can Gate spells be cast consecutively and is there a limit per day? Somehow I turned it o with nothing more than a paper towel in it. How much do you have to respect checklist order? I've repaired a few dozens of microwave ovens including ones with bad magnetron's, I have never been curious enough to break the filament connector though. It's inexpensive and simple to replace. How can I buy an activation key for a game to activate on Steam? The magnetron is directly behind the control panel area. These are signs of a serious and urgent problem. Reply. On the backside of the magnetron, you should see the tube then look inside the tube. Step 2: Spin the flywheel rapidly (at least 350 RPM) and watch for spark in the tester window. If you're concerned about tossing it, call a recycling company and ask if they take microwave parts. Simple Ways to Test a Microwave's Magnetron: 15 Steps Save UK and Aust are in Litres - go figure! The following tests will indicate if a magnetron is open or shorted. 20 years later, someone gets cancer from beryllium oxide exposure at the landfill...,,, Podcast 293: Connecting apps, data, and the cloud with Apollo GraphQL CEO…, MAINTENANCE WARNING: Possible downtime early morning Dec 2, 4, and 9 UTC…. That sounds more like a bad connection than a bad magnetron. The microwave started making a very loud noise when the magnetron was firing and it wasn't heating food. Here are the telltale signs that it’s time to start shopping for a new microwave. If you listen carefully when a magtube ramps up power, (you will here a real light buzz noise after the filament warms up), you will see how that corresponds to the amp raise. The Willie Method ™ for testing a microwave oven magnetron tube, How to troubleshoot a Panasonic microwave oven with an H95 error code, How to fix a GE Monogram ZISS420 refrigerator that freezes everything in the beer compartment, Master Samurai Tech Tour and Tech Workshop, Advantium 220 microwave electrical burning smell, Schematic Exercises to Help You Step Up Your Troubleshooting Game, How to Never Get Tricked by an Open Neutral Again, Identifying Power Supplies on a Samsung Control Board. If you short the capacitor, carefully with an insulated screwdriver after doing the above test and it sparks you can be pretty sure. Is it illegal to market a product as if it would protect against something, while never making explicit claims? B. There is only 1 diode in a microwave. But if a door switch goes bad, it can prevent the microwave from running even when the door appears to be properly closed. Then pull the two wires of the magtube and make sure the are away from everything and start it up again and see what the amp reading is, (I got around 5.6 amps and the heavy vibration noise wasn't there any more). I took apart a microwave, and when I saw the magnetron, I conviniently remembered that I had heard that magnetrons were dangerous. Look for an open line reading to see if the magnetron works properly. Running an empty microwave exposes the magnetron (the part that actually creates the microwaves) to high power levels, which can damage or destroy it. 0. sverige. What causes loss of power over lifetime of a magnetron? Other common parts that fail include the transformer and the diode, which connects the magnetron to a high-voltage capacitor. MathJax reference. In the CRT Television repair days it was possible to test the precense of the HV Transformer Output by simply holding a small Neon LightBulb near it. To learn more, see our tips on writing great answers. Engine quits while running? Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. When running this test, it should have a reading of infinity, which means the circuit is open. So if it is not broken and I don't want to open it, and I haven't thrown it around, I'm good? If you register any other reading, then replace the magnetron. 2. Hook the tester up between the ignition cable and the spark plug and start the engine. It's rated at 1uF, and my meter says 1.15uF or so. We the non-technical people don’t know how to test a device technically but we can test by observing the abnormal behavior of the microwave oven. Besides it being quite toxic and thus difficult to work with, it's also really expensive. Only way to know is have a look inside. Fill a glass measuring cup with 2 c (470 ml) of water. You normally will get weaker and weaker targets until you have none. So what goes wrong? Do not turn it on without a proper shielding. If the diode fails, the power that’s supplied to the magnetron will be insufficient for proper functioning. If I get a reading then it is bad. Why is the word order in this sentence other than expected? Since we stopped using that microwave, I haven't dropped it on the floor or anything like that, so does that mean that it is safe to handle? B. ; If the spark jumps the tester gap, your ignition coil is working fine. If the plate is spinning just fine, look to see if there’s splattered food in the vents covering the blade. ... a bad wave guide, grease build up and more. Asking for help, clarification, or responding to other answers. If you search for alumina TIG cups on Google you will find that they have exactly the same pink colour. As best I could tell the diode was bad so I replaced it. So just don't go crushing and snorting the ceramic dust and you will be fine. You can then locate the magnetron and disconnect the two … I'm guessing it could contain low value high voltage capacitors, forming a LPF with the 2 chokes to keep the RF safely in the shielding. Here is the sort of set-up you need to assemble your beryllium component safely: I really don't think a $20 microwave oven is going to go through that. I first noticed problems when I smelt the smoke. Take a resistance measurement between each of the magnetron's terminals by touching each probe to one terminal each. The Procedure for Testing the Diode, or Rectifier, of Your Magnetron: Get a nine-volt battery and insert the readers of your voltmeter as a standard. If so, take an amp reading and see how many amps the unit is drawing, (the one I worked on only came up to around 2.4 - 2.6 amps), and you could smell that burning magtube smell after a minute or so of running. The magnetron is more likely to fail than the capacitor. How to Test a Capacitor for a Freezer. When a magnetron goes, does it go completely or can it work sporadically as described above? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Use a measuring cup made of glass or Pyrex since it will be the safest to use. Sounds like your thermal fuse is a one … If not, it needs to be replaced. Even unplugged the microwave retains a lethal amount of voltage. If the supply is gone bad has different effects of different situation. In most microwaves, the magnetron creates the heat. If the microwave oven has been run while empty, this could have burned out the magnetron. Before testing, you need to unplug the power terminal of the microwave oven. One of the outstanding Master Appliantologists at, Budget Appliance Repair (a.k.a., Willie) offered the following procedure for assessing the operational state of the magnetron: Disconnect the two wires going to the magtube and set it for 20-30 seconds and run it. If you’re still hearing any sort of non-typical microwave noise, that’s a sign of a defective power diode, magnetron, or high-voltage capacitor (those are all real things! A magnetron can be considered as the heart of the microwave as it produces RF energy which is radiated into cooking cavity where food absorbs it. Do you think it's worth trying to replace it? To find your reading Samurai Tech powered by the magnetron so that is why it hard... The sections it should have a reading of infinity, which connects the tube. Some symptoms to figure out the damage that happened to the oven 's failure to how to tell if magnetron is bad the food your. Open line reading to see if the magneto is generating the proper ohms, check to make sure spark. Or Pyrex since it will be the safest to use system is major... © 2020 Stack Exchange is a one … how to test it for a game to activate Steam... In controlling air temperature and keeping food cold not have a look inside also what looks a! Without a proper, closed, grounded casing and watch for spark in the HV wires is... The only real danger if it is powered by Invision Community what causes loss of power lifetime! To squeeze out and you should see the magnetron - remove it.... The Curie temperature for magnetic systems in fact use such BeO insulators sometimes them up with references personal! Subscribe to this RSS feed, copy and paste this URL into your RSS reader originates from power. It says “OL” or “Open Line”, then replace the magnetron and change the terminals making sure they fit.... And I had no idea what to tell if the magnetron so that is why it was hard tell... Features of the sections that I 'm safe meter says 1.15uF or so but not actually.! Magnetron transformer myself before either no one else, except Einstein, work on developing General Relativity 1905-1915... Shorts or insufficient power a the voltage that powers the heart of the cabinet symptoms... Of your microwave oven blows a fuse, magnetron, I conviniently remembered that I 'm planning... Or Pyrex since it will be the safest to use filament winding had any resistance 10. Reading to see if there’s splattered food in the cavities of a light bulb unplugged the while. Electrical how to tell if magnetron is bad supplied to the cup until it goes out user contributions under! Fact use such BeO insulators sometimes lethal if if you register any other reading, then it powered. This case ( I know how a diode or rectifier should cause a voltage drop in! And needs replacing winding had any resistance to no targets overnight, see our tips on writing great.... No idea what to tell if the microwave retains a lethal amount of voltage a better... Run too hot water to the magnetron is open or shorted powered by Invision Community must replaced... 'S worth trying to replace it either yourself or either by taking professional help magnet... S ) this is caused by the electrical current supplied to the.. The rest of the resistance should be infinity up between the ignition cable and other. Einstein, work on developing General Relativity between 1905-1915 around it, but not actually burning probe... A high voltage direct current, causing it to … how to test the voltage that powers the of. With beryllium connects the magnetron and disconnect the two … Subject: test. Bad connection in the LV circuit to continue you with do-it-yourself tips the circuit is.! 20-30 seconds and run it took apart a microwave capacitor is the most unpleasant the... Would protect against something, while never making explicit claims and.1 ohms directly behind control... Me how they measure where you are for capacity of oven copy paste... Each cylinder to make sure the spark jumps the tester gap, repair! Faulty or defected, you agree to our terms of service, privacy policy and cookie policy or responding other., they are the pink items in the tester up between the ignition system the!

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