Microwave oven suddenly started making weird noises and does not heat up food. Throw that thing out. And its not like the microwave commercials or boxes explained to you how it was working exactly. Ref: I handle Beryllium and Beryllium oxide parts and have to take an annual safety course. I feel like that's the case. Some have the beryllium oxide, some don't. Similar things would happen if you took a laptop near it and tried to use the wifi while the microwave was running. Next day I was curious, so I plugged into a diff outlet. 5 GHz the FCC recommended limit is 50 W/m 2 for occupational exposure (where someone knows they're being exposed and limits their exposre time etc) and 10 W/m 2 The magnetron can only hurt you if it happens to contain beryllium oxide and if you break certain parts of it (ceramic insulators) and inhale/ingest the dust, or if you use it in conjunction with the other parts to make some sort of microwave gun (highly inadvisable). Microwaves just heat food with energy like an oven or a flame. 12M subscribers in the Damnthatsinteresting community. The kind of radiation you're worried about wrt cancer smashes right into the tiny nucleus at the very core of a single atom. It is possible the breaker is the problem. without the fan cooling the magnetron, the thermal switch opens and kills the microwave. It is not a voltage doubler, it is a full wave rectifier. Not the transformers. To describe the issue, the microwave starts up but produces no heat. 2. Not dangerous if the first rule of repairing microwaves is followed, unplug and wait a minimum 30 minutes. More so worried if it’s radioactive or something like that. As long as the interior integrity is sound you’re safe. Resonance depends on the cavity size/Q so you will need to physically alter the size of the cavities. The only good thing about magnetrons - their output power. Could be dirty / burned up contacts on that. Don’t plug in the microwave into a closed breaker. The radio waves made by the magnetron are large enough not to escape from small holes. Yep they’re $250 - $450. Unlike other vacuum tubes such as a klystron or a traveling-wave tube (TWT), the magnetron cannot function as an amplifier in order to increase the intensity of an applied microwave signal; the magnetron serves solely as an oscillator, generating a microwave signal from direct current electricity supplied to the vacuum tube. Also, a microwave oven uses a lot of electricity, so if it is faulty, it can cause shocks, sparking, and fires. ”. Set the cover aside in a safe place. I never test the mag with a meter. From what you describe it sounds like you damaged the microwave. To change frequency you need to drive with a different frequency current, but to amplify that you will need resonance. Just don’t hear your food in plastic containers and you’ll be fine. Over . Abatement measures are to keep any dust generation/ exposure to a minimum. There are no obligations for the mods to give warnings or temporary bans. At what point should I just get rid of the damn thing? Feb 3, 2018 · I took apart a microwave, and when I saw the magnetron, I conviniently remembered that I had heard that magnetrons were dangerous. In fact - it makes no sense to build a DIY radar out of it. Microwaves are so big they pick up entire water molecules and shake them. Microwave magnetrons play a vital role in the functioning of microwave ovens This component holds a charge and can be very dangerous if handled improperly. This is a 2-year old Samsung model with moderate use. Hand to foot can work as well. Could be bad magnetron tube or a shorted high voltage rectifier. 26 hours. These electrons penetrate the food you have inside, causing it to heat up and cook, oftentimes much more quickly than if they were in a regular gas or electric So, my built-in oven has a microwave/convection oven that convects, but doesn't microwave. But for other bands, such as 5GHz 802. Microwave covers are typically secured with screws. ). 5 ohms. Samsung microwave model SMH11816S magnetron constantly on when closed. It suddenly stopped heating food and makes a louder than usual noise. The fan doesn't turn on, the platter does not start turning, and the magnetron does not fire. Need to fix your stove, cook-top, oven… Hot take here: taking apart the microwave isn't worth it in terms of time spent vs. A safety device has failed open, a door switch is defective, the magnetron has failed, or the high voltage diode has failed. Same idea. You need some electrical/electronics knowledge to determine the issue. It does so by using a heated filament and a magnet to produce a swirling field of electrons, which resonate with channels in the anode to create a stream of microwaves. You risk going blind. The multimeter should display a reading between 0. You need a high voltage probe to really test the magnetron. patreon. Microwave ovens just use microwave radiation, which is a type of light. When there are no water molecules in the microwave, the microwaves are absorbed by the magnetron which can damage it. 0. You can do a lot of really, really dangerous and inadvisable things with the magnetron of a microwave, like build high powered tube/RF amplifiers, make HERF guns that'll brick your gadgets at a distance and more. Use the appropriate screwdriver to remove the screws and carefully lift off the cover. It is recommended that those unfamiliar with microwave repairs contact a professional to ensure safe removal and installation of the component. This was reproduced multiple times. And magic is scary and dangerous, so it must be radiation, they thought. This will act as a test load. Unless it’s some super high end microwave, I’d throw it out and buy a new one. •. Oct 19, 2019 · The domestic microwave oven needs high power to cook the meal and high frequency to excite the water molecules. And yes it’s true if you pay someone to fix it, it would cost the same. Over time this material is consumed during normal operation. I love everything about them, the sounds they make, the gamble whether the magnetron has alumina or beryllium oxide when taking them apart, how they work, etc. The magnetron may just contain some kind of aluminum oxide and occasionally chromium oxide to make it a little bit pink . I heated something to check. But instead of a 3-5 second cycle we could now cycle it several times per second, giving a much higher resolution of the heat output range. And, unfortunately, this is not a throwaway microwave (at least not to us!). If that doesn’t work it sounds like you need a new microwave. In this sense, a microwave oven is dangerous in the same way a lamp with a frayed cord is dangerous. . The light stays on. Posted by u/AbsoluteZ3r0 - 2 votes and 2 comments Basically it's expected and unavoidable without physically relocating the microwave. The pair of magnets in the magnetron are strong, and very useful. Use a kill a watt or ammeter with a line splitter. Run the microwave: Start the microwave and set it to run for a specific duration, such as one minute. Then, touch the probes to the magnetron terminals labeled “Filament” or “FIL. However if microwaves still scare you, they have a faraday cage built in to contain the microwaves from leaking outside your microwave to begin with. Power transformer for the logic board, sure, if you can use that form factor/capacity. TL;DR The answer is no, microwaves are fairly harmless due to being non-ionizing radiation. Just use typical crimp clips. Let’s take a look at how magnetrons produce microwaves, how those microwaves microwaves are so dangerous to work on because the capacitor holds 4000wats even after unplugged if you don't know what to not to touch it'll kill you that being said you either have a bad wave guide or bad magnetron or exposed metal inside the microwave It sounds like you went just over that. If not. Checking the warranty it’s just broken down a month after I could feasibly do anything about it. Most of the time it works fine but every now and then it will get into a state where the power the unit is putting out cuts out for six or seven seconds about every 30 seconds. It is actually 4 to 6 diodes in series, so your meter diode check To perform this test, you will need a multimeter. A magnetron (the thing that creates microwaves). old microwave. Add a Comment. Submissions should be for the purpose of informing or initiating a discussion, not just to entertain readers. I recall when the microwave worked properly, the fan, turntable, light, etc. I was told if the Magnetron is broken it may not worth repairing. It might as well have been "magic" to people when it first came out. It is also mentioned that RF power reflected back into the magnetron has a detrimental Anyways, the magnetron I pulled out is a Whirlpool 2M167B-M16. An example would be running it for 50 seconds and having it stop on its own just as it hits 10. Apr 23, 2024 · The magnetron operates on the principle of electron resonance. A magnetron-oven is an oven that contains a part hat produces microwaves; this is the actual magnetron. Door interlock switch, fuse, magnetron diode, or capacitor all pretty cheap but it could be the magnetron to a bit more money. If advice given is thought to be dangerous, you may be permanently banned. If not, let it cool off for an hour and try to heat some food to see if the magnetron still works. The safe limits depend on the frequency ("microwave" is quite a wide range) but assuming a microwave oven at about 2. The metal mesh on the front glass of the microwave keeps the microwaves from escaping the interior. No heating, but then used again and the unit powered compl off. Less than 1 amp is switches or board. If the HV diode is not shorted it should be fine. If either are 'infinite' ohms it's the tranny. The magnetron in a microwave is made out of beryllium which is a very dangerous element so if you say took an angle grinder to the magnetron to say get the big magnets and breathed in the beryllium dust you would get cancer and die. Turn table going and microwaves blasting. The technician will need to remove the old magnetron, install the new one, and perform electrical tests to ensure proper operation. Searching reddit and the internet recommended to change the magnetron. . Magnetrons behave a bit like a zener diode. a consumer level microwave oven is nearly idiot proof. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Its just more expensive We found that if we tried to cycle it too fast, the magnetron would enter a mode that would stop putting out power. The 802. Thanks. Doesn't matter which side is hot since it just changes the phase. Or buy a new microwave, I picked up a brand new Samsung a few years ago, stainless steel, undermount, for under $200 on sale. 3. But you have to have an RF license to be able legally use this power for a radio purposes. Help needed. student in quantum optics and nanophotonics. 1, we find that t ~= 1. DO NOT USE IT. So I ordered the same magnetron model from Amazon, and replaced the magnetron from my microwave. If you do wish to toy around with an active magnetron, keep the device fully assembled. Using HEPA filters and wet machining helps quite a lot. I'm happy that it's still heating fine, but I'm worried about what else might happen if some heat or radiation shield is out of place, or some motor or magnetron is still cooking things, but blasting out something harmful. The magnetron transformer, not unless you want the dangerous high voltage, or replace the secondary for a low voltage/high current supply, or copy the primary to make an isolator/step down transformer. It didnt catch fire, thats good. In this sense, a microwave oven is dangerous in the same way a conventional oven is dangerous. That's centimeter waves. Posted by u/zahariburgess - 1 vote and 9 comments Jun 21, 2018 · "Each magnetron’s cathode has a special coating to enhance performance. If it smells burnt its probably done or at least not safe anymore, because electronics might be cooked. Is a Toshiba Magnetron better than an LG? I replaced this with a new Toshiba 248(JXB) they both share part # W10754299 so far the Toshiba works great, and honestly it seems like it may be quieter than before. just a magnetron alone is not enough for anything. Also microwave ovens get trashed all the time and recycled by stupid people who don't know anything about any level of electronics . This sub-reddit is for almost anything related to appliances. An unshielded microwave could cook your corneas or Microwaves work on radio waves. crasic's point is that the magnetron, the thing that generates the microwave radiation won't work at nearly 100% efficiency while the door is open. Unplug the microwave and try closing the breaker. So you will need to modify the electronics, as well as the 50K subscribers in the Appliances community. Again this isn't entirely guaranteed to kill you, but it's a worst-case scenario. First one was $105 and looks like I can get one now for $77. Jul 6, 2023 · Here’s how you can check the power output: Set up a test load: Place a cup of water or a microwave-safe container filled with water inside the microwave. Final Note: Ensuring Microwave Longevity. On the other hand, if we go best case and say that 50 C will kill you, keep M = 70 kg, and put the energy transfer rate at r = 1, we get 1. " Although that article deals with magnetrons for radar, I think it still applies as the principle of operation is the same. I would suspect that the fan is bad or running slowly. I am obsessed with microwave ovens & the parts inside of them. What is not needed is high stability because the water energy absorption spectrum is broad. com/somaelectricals If You liked the Video, Kindly Support Us: https://paypal. it came on. Wear an N95 mask and don't damage the magnetron and you'll be fine. Your correct there is dangerous materials in microwaves tho it's the ceramic on the magnetron that's the issue. If the mag had already been replaced then replace the inverter. If you have the rest of the radar - you can use a magnetron to "build it". Use a clamp type ammeter and clamp it on the main neutral. Reply. It is like when you open the fridge door and a light switches on. Haven’t found any useful info. But what microwave ovens use is not that. Crypto Microwave rad wave guide. As it goes it intermittently makes a click noise, and ends the cycle early. As we know, microwave magnetrons contain deadly beryllium oxide. In doing some research, it sounds like it's probably the magnetron. d. The technician that replaced the mag probably ducked something up. Before disposing the entire microwave, the glass plate inside can be worth decent money for resale. The capacitor is there for current limit. They are not radioactive nor capable of producing microwave output if the unit is unpowered. I decided to research this a bit further (I know, great timing) and I found that some magnetrons contains berilyum oxide, which is fatal if you breathe it in. That'd be like trying crack a walnut with an ocean wave. You can use it to melt metal objects. I'm looking at probably $200 for their labor. They don't make Wideglide anymore 😩. 4. Disconnect the Magnetron Wires. You need the transformer, a high-voltage low capacitance (like . Thanks for any help. Otherwise, there will be a big chunky relay which supplied mains to the HV transformer primary. 5 amps will be the inverter. me/bijaysinghPaytm, Phone Pe, Google Pay : 9000005315 S r/Sino • Massive beryllium find in China raises stakes in rare earth tensions: Surveys discover what’s believed to be world’s largest deposit of metal used in manufacture of weapons. Inspect the magnets around the magnetron tube for cracks. The video links to a repair page where they used this part, which appears to be discontinued and instead recommends the ERP 10QBP1003. I own a YouTube channel where I just destroy shit for fun, and whenever there is a microwave or any other electronic on the If you comment on this post please only post accurate information to the best of your knowledge. No Magnetron. A Tesla coil on the other hand only emits kilometres waves radiation that just goes around you without interfering with you. However, the replacement part does not have the same components as the original. However if you’re skilled and can do the repairs yourself, I’m sure it’s under $100. Take note of the wire connections on the magnetron, ensuring you remember how they are connected. If there are internal holes lager than the holes in that front mesh Feb 16, 2018 · Supports Us www. Thus, microwaves cannot ionize molecules, such as your DNA, and will therefore not cause cancer. Going up in price with microwaves dont give you a lot better product. I have a Bosche microwave HMB57152 UC/01 the magnetron was arcing so I took it out and attempted to buy a replacement part. 1K subscribers in the highvoltage community. Microwave transformers can be pretty dangerous. My cheap Walmart RCA microwave is the best one I've ever bought, it has little features that I like that are hard to find in bigger names and it was cheap and works great. Any type of electric appliance with In other words, you touch the cap with one hand, and ground yourself with the other hand, and the current flows right through your body. IF YOU ARE NOT A QUALIFIED ELECTRICIAN, you should exercise extreme caution when commenting. So using the (pure speculation here) data of T = 82 C (at which point virtually all of your DNA will have melted), M = 70 kg, r = 0. The microwave should work for a minute or two at a time. [deleted] So I’ve got a magnetron I ripped out of a microwave 2 years ago and recently found it could be dangerous. 4GHz range (which is the same range of microwave magnetrons, as well as mid-era cordless telephones) are maxed at 300mW iirc. Samsung microwave (SMH1816S, not SMH11816S as listed in title) was working great, no problems, then it started staying on when closed. My cousin built a microwave cannon and took all the Precautions only to forget removing his ring and got 3rd degree severe burns from seconds of operation Entirely the wrong kind of radiation. As several folks here have noted, disassembled microwave ovens are not inherently dangerous if de-energized, grounded, and capacitors shorted out to a discharged state. 8 days. 11b routers in the 2. May 13, 2024 · The magnetron is a high-voltage component, and improper handling can be dangerous. HV stuff Discussing all things related to high voltage electronics and… May 5, 2019 · \$\begingroup\$ @joaocandre Note that crasic is right, but dangerously so: you clearly underestimate the dangers of a microwave. Electron Emission: The cathode emits electrons when heated by a filament or a thermionic emitter. Microwave ovens are everywhere, and at the heart of them is a magnetron — a device that creates microwaves. 56e5 s, or 1. I called Samsung notified them of the danger the microwave posed. It also has this to say about the name: In the Netherlands the machine is called a magnetron. The microwave made a slight sound. In that sense the radiation can make materials dangerous even after the original source is removed. 11g, the mrp is different. Any risks now that it’s fully out? I tried to disassemble it at the time but failed if that’s anything. The transformer does hold a charge, and needs time to dissipate. They sent a technician who tested the microwave and witnessed the microwave overheating. There will be some toxic mercury vapour produced, and the microwave oven is then best disposed of as it will keep emitting vapours for a while. 246 votes, 12 comments. If you take out the magnetron, point it at yourself and turn it on you’ll have a rough time in the same way that if you climb into a lit bbq you’ll have a rough time. No, microwaves are not bad for you in any way, it's just fearmongering psuedoscience spewed by idiots so they can sell you their wacky fad diet or radiation blocking clothes. What you're experiencing is what happens when a bluetooth headset can't correctly communicate with the paired device in a consistent manner. No_Jellyfish_119. 1. ( 1, 2) The magnetron does this cheaply. [DiodeGoneWild] tore one apart to show us what was inside and Depending on the age of the Microwave, it might be just best and wise to replace it. And if this is a After a few days of working and havign to diagnose my microwave in my spare time I finally found the culprit! It had a bad magnetron. comes on first, then almost instantly there is a click which is followed by the hum of what I assume was the magnetron (the sound that goes off if you use less than level 10, while the fan still blows. ADMIN MOD. 5 amps will be the magnetron. know i need to get a new one, but have a question. The low price and low duty cycle of the domestic microwave means that they should last for many years Remove the Microwave Cover. The goal of /r/Movies is to provide an inclusive place for discussions and news about films with major releases. Need to fix your stove, cook-top, oven… Microwave ovens often have a scattering device between the microwave source (magnetron) and the cooking chamber. Heart conditions can make it worse, as can sweat and wounds and so on. We have a home warranty with American Home Shield (and didn't have any problems on our first call to fix our AC unit a couple weeks back), but I've heard of people having issues with them The microwave may take some beating nearly as if you were running the microwave empty. If you're taking them apart for fun then by all means carry on but if you're doing it for money I can all but guarantee you're losing money by the time you go pick it up, get it home, crack it open, remove parts, etc. In short: nothing good. In trying to fix it, I triggered something with the door switches which killed all power--completely unresponsive. The magnetron is safe as long as you don't damage the ceramic. From what I can tell there is a thermostat on the Chronic inhalation exposure leads to berylliosis. 11 31K subscribers in the Appliances community. The unit started to smoke from the exhaust part of the unit, giving off a burned plastic odor. Just one crack will cause the magnetron to not operate correctly. If it's somewhere around 6-7A, then it's the magnetron. But half a wavelength away the reflections could cancel each other out. As a magnatron is effectively a powerful radio transmitter which emits. The radiation in a Microwave oven is tuned to the rotational frequency of water, so all it does is make the water molecules wiggle around, which creates heat. Begin by setting the multimeter to the resistance setting and ensuring that it is properly calibrated. With the microwave off, simply pushing the door open button to open the door causes the microwave to actually turn on while the door is wide open. In addition to the mentioned mitigating factors, all three of these parts are Dec 6, 2019 · A Magnetron Tear Down. Don't forget to remove any metal ornaments off of yourself before using. 1 Share. Toshiba ML-EM31(BS)/CA Microwave - Magnetron Power Cutting In and Out I have this microwave and I hate it. If the relay was sticking (contact welding) in its final days, it would explain the humming after the microwave was off. I replaced the magnetron in my microwave 13 months ago and it appears that the damned thing is out again. This likely is the the result of a few different possible failures. 1uF) cap and a high voltage rectifier diode. One expose to beryllium oxide dust can be lethal. Jul 30, 2023 · The magnetron in every microwave is what gives the machine its cooking power, and when it's fired up by electricity, the magnetron oscillates, dispersing heated electrons into the oven. Any advice is appreciated. Business, Economics, and Finance. My Black and Decker microwave began acting up in a very dangerous way. Less than . They are being absorbed by the water molecules in your body, which are thus heated up and sear you on the inside. Remove the secondary winding from a microwave transformer and replace it with 1. Fortunately, I was able to power off the microwave to prevent a possible fire. A transformer that converts 120/240 up to about 2000v and a high frequency capacitor (this is the thing that will kill you - it holds a charge, and if you want to risk dying you're welcome to stick your tongue to itbut most cross the posts with metal to discharge them. The parts (when not covered by warranty) are cost prohibitive, and dangerous amatuer work, IF you can even find them. I haven’t bothered to repair a microwave, but I have torn several apart. Project Help. Bosche microwave magnetron different from OEM replacement. For the most interesting things on the internet I have a Samsung Microwave which I used for about 2 years. Here is a video of removing the magnetron, the model of microwave in the video is the same model, just white instead of stainless steel / black. If you can verify good function of the safety’s and door switches, check the diode. but didn't test heat yet. You'll be totally fine, microwaves use microwave radiation, which isn't ionising (aka doesn't cause cancer) plus the metal grill on the front of the microwave stops the He relaxed the magnetron and, I think, a switch. Except here, when you open the microwave oven door, the "light bulb" (in our case it's called a "magnetron") switches off, and the microwave radiation stops being produced. /Zaim Ph. So I’m looking to focus the radiation from a magnetron down to at least 1in in diameter in a beam. 5tabsatatime. Amp draw is what you need to do. 7-8 minutes is not good. When it comes to managing the troubles of a malfunctioning microwave, the microwave magnetron is at the forefront of the issue. Whirlpool agreed to replace the part as a courtesy, however, there is only one repair person in this town and they're 3-4 weeks out booked. 2 and 1. Cavity magnetrons use resonant cavities to emit their microwaves. There are a few different things it could be. At 2m assuming an isortropic source the power density is 16 W/m 2. After the thermal switch cools down, this closes and the microwave is functional again, but only for a minute or two. Be sure to learn about the beryllium oxide bushing in the magnetron before you mess with that. It uses EM513 rectifier diodes (1600V 1A) wired in series and then wired as a full bridge rectifier. This makes the Netherlands probably the only country where the oven is named after the internal component that generates the microwaves: the magnetron. A microwave has only a few real 'working parts'. Electron Acceleration: The electrons are accelerated towards the anode by a high voltage applied between the cathode and anode. The wave of the future is the "Solid State" Microwave Oven. Best microwave ever biggerthanlife. Up to 10 but probably around 7 is the high voltage circuit. Sort by: You have to find a way to check the amp draw of it. I'll never buy an expensive microwave because to me there's no distinction. The most likely cause of a no heat condition is the magnetron. The only connectors are the two on the front there. Microwave energy is on the same spectrum as visible light, just at a different energy level. Also if your foolish enough to power up the magnetron once removed from the microwave you can get radiation poisoning . It helps evenly distribute the energy and prevent hot spots, which are areas that the energy has been concentrated due to multipath reflections, and is reinforced. Here’s how it works: 1. Same thing happened with cell phones. Sometimes the microwave will start running again 20 or 30 seconds after it stops, if the timer is still going. money made or the possible danger from the parts inside. It will run, but there's a very distinct sound difference when it's running and heating vs when it's just running (which, I believe, is the difference between the magnetron running and not). It's roughly the same type of light used by wifi devices, except thousands of times more powerful. Another option is to buy the magnetron myself and replace it for $120-$140. 17 votes, 35 comments. The frequency is intrinsic to the maggy. 5 turns of 2 awg cable. Microwave ovens aren’t harmful. Most, if not all microwave ovens I have seen use a single high voltage diode. The door switches are pretty easy to replace. Edit: When it does run, sometimes it stops running (fan, turntable turn off) part way, but the timer continues to countdown. The danger comes from inhaling any small particles. It worked alright for a while, but is back to not working more than it works. The magnetron is dangerous because it emits microwave radiation. Apr 9, 2023 · A magnetron is a device inside a microwave oven that produces microwave radiation to heat food. kctvgaeollhqvyyurxna