And also the insulating material is also not safe to touch with bare hands as it is coated with the beryllium oxide which is a danger when inhaled. Diode overheating also occurs when the alternator is used to bring an undercharged battery up to a fully charged condition. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. 99. These are signs of a serious and urgent problem. Stop what you’re doing, and turn off and unplug the microwave immediately. Is it dangerous to repair a microwave? Get spare diodes, fuses and other replacement parts to fix your microwave hassle free and for less. Problem is in HV circuit. The positive side won’t have a band and will have a bit that goes to the capacitor. How dangerous is a magnetron? [amaplug_bestseller keyword=”microwave magnetron” style=”Popup (Bottom)” items=”5″ max=”10″ location=”com”]. And also it not a better option to repair when you are alone at home. There is only 1 diode in a microwave. And overheating of the magnets also causes damage to the magnets in magnetrons. As the vehicle is driven to bring an undercharged battery up to the correct voltage, the excessive current flow can overheat the diodes, leading to failure. Best Bottleless Water Cooler Dispenser & Benefits. Thus the microwaves are produced for the magnetron from the antenna. Your meter needs to be using a 9-volt battery. But, Do you know what causes the magnetron to fail in a microwave oven? While a catastrophic failure is one of the more obvious laser diode failure modes, it is also found that laser diodes degrade over time. Burned Dome (or Antenna) caused by arcing due to reflected microwave energy {back feeding}. In this section of my microwave repair guide, I will walk you through the steps in repairing a microwave that won’t run. Think twice to repair the magnetron as this will again lead to damage within a short time after improper repair. Transformers can be a little tricky to test because the high-voltage side can be broken while the low-voltage terminals are perfectly operational. Attach your amp probe to the line splitter, plug in and run microwave 10-20 seconds. Once you have diagnosed the problem we have the OEM replacement diode that fits your appliance.. Find the right diode specification for your Siemens, Samsung, LG or Bosh microwave. Why Is Your Washer Leaving Marks On Your Clothing? Buy replacement microwave oven high voltage diodes online and take advantage of quick delivery and great prices. Why Does Your Refrigerator Keep Tripping The Electricity? Appliance ExpressAugust 30, 2017Microwave RepairLeave a Comment. They are Magnets Cracking, Burned out terminals, Burned antenna/dome, a loose connection of magnetron, Resistance continuity. In most cases I’ve found diodes to short if they’ve been used in power applications, such as mains power supplies. The heated cathode rod excites the electrons to the anode. A diode or rectifier should cause a voltage drop, in this circumstance one of approximately 3 volts. But have you ever thought of why it happens so? Some of the causes are visually seen and some are known only by testing. This loose connection leads to high resistance heat. If the resistance stays high, the diode … But do you know how actually a magnetron works? Generally, the microwave converts the electric energy into the microwave with the help of a magnetron. You can test a new diode with the same procedure of creating a series circuit and confirm that there is an appropriate drop in voltage. Additionally, our technicians are implementing enhanced safety measures to adhere to social distancing and sanitization guidelines issued by the government in order to continue providing safe and professional service. Usually over time components break down and go bad. $10.99. link to What are the Best Knee Pads to Knees for Flooring & Volleyball? When input fuses have blown, shorted diodes, perhaps in a bridge rectifier formation, is a common cause. link to Best Bottleless Water Cooler Dispenser & Benefits. It’s extremely important to connect the diode in the correct direction to ensure a safe, functioning connection. An improper repair can lead to the shock and burn out parts. It is probably not the magnetron even though the magnetron could possibly be bad. When he investigates your problem, he’s likely to find one of these 7 common causes of microwave failure: #1: Diode Burn-Out. On this part, look for blackened pieces or signs of smoke. Sparking inside microwave is common and does not indicate that your microwave has gone bad. This test is to check between the terminals of the magnetrons with an ohmmeter. The food in the microwave oven thus gets heat up with the vibration of water molecules. If you observe these symptoms while cooking food in the microwave oven the immediately stop the oven by unplugging the main power supply and it’s time for you to replace/repair the magnetron. No heating; Burning smell; Arcing sounds; Snapping sound; Deceases in heating and stops before ending. Rectifiers can fail, so it is a common cause of microwave and appliance malfunction. This magnetron is a vacuum tube with a cathode rod at the center surrounded by a hollow anode rode with cavities in it. There the electric filed along with a perpendicular magnetic field also exists. Then use gator clips to put the diode in a series circuit with the battery to test the voltage. We use cookies to ensure that we give you the best experience on our website. The negative side is the cathode side, and the positive side is the anode side. The high-voltage winding to ground connection should also have a resistance of zero ohms, and if it doesn’t you’ve found your broken component. Deceases in heating and stops before ending. The question is when? Periodical maintenance is the best option to overcome all the causes that happen to microwave including the damage of magnetron. I just used what the microwave oven manufacturer listed in the parts section. Tags:FGMV174KFB, frigidaire gallery, frigidaire repair, microwave repair, 1523 Northwest Blvd #100 4.2 out of 5 stars 73. With its operating simplicity and speed of performance, it is an essential part of the modern kitchen. Because a residue of the power will remain in the magnetron which can lead to shock. As magnetron costs much to purchase, it’s ok the problem is repairable, if the problem is severe then you need to change the magnetron by purchasing the new one. If you are interested in further details of the causes then travel with us by swiping up the page. How to Release a Stuck Water Filter from a Jenn-Air Refrigerator. The insulator in the magnetron helps to insulate the whole magnetron from being attacked by the direct voltage. Let us know the role of the magnetron in a microwave oven. If you want to replace the magnetron with a new one make sure that is done by a professional technician. WARNING:  DO NOT ATTEMPT WITHOUT EXPERIENCE IN APPLIANCE REPAIR. Here are some symptoms to observe when a magnetron fails. …etc. But if any damage happens to it will lead to the insulator breakdown. It can be very frustrating because the symptoms disappear when the oven's outer cover is removed. If you have a Frigidaire Gallery FGMV174KFB (2012), you can test the functionality of each of these parts with a multimeter. This cause happens when the damage occurs to the magnets of the magnetron, this results in reducing the magnetic field. Bottleless Water Cooler In these circumstances, something is interfering with your microwaves ability to fully utilize its power. ANSWER Hello Plow. The reasons for no heating in a microwave oven is because if damaged magnetron or high voltage diode. Many viewers have been asking how to test the microwave oven's HV Diode. Other Potential Electrical Problems with Your Microwave: If your diode is working and doesn’t need to be replaced, the next best component to test is your capacitor, and then the high-voltage side of your transformer. When this occurs, check for a stalled or … Laser diode reliability and lifetime basics. Thanks!! Owing to our dependence on such devices, it becomes necessary to learn the basic skills required to tackle common microwave problems. Microwave Diode Compatible for GE WB27X10930 Samsung DE91-70063D LG 6851W1A002E and Others 2 PCS 4.2 out of 5 stars 75. 10-14amps = all is good. A microwave that runs, but will not heat is basically useless, but can be fixed. Issues with either the microwave’s high voltage diode or magnetron often cause this problem. But what is better to replace/repair the magnetron in the microwave oven. The produced microwaves will travel to the inner cooking chamber through the waveguide. Plow. Water is essential for everyone and people are making it simple to clean and revitalizing water for everyday life. I hope that this helps. If the reading is other than continuity then there is something wrong with the magnetron in your microwave oven. Based on your description, the problem is not caused exclusively by the magnetron if at all. There are three parts of your microwave that deal primarily with the high voltage side of things and connect to your inline fuse: the capacitor, the transformer, and the magnetron. There are some traces of power inside the magnetron which can cause shock. Under 3 amps the problem is in the LV circuit. Replaced the diode again, same story in another ~10 days... What may trigger this failure? If you observe these symptoms while cooking food in the microwave oven the immediately stop the oven by unplugging the main power supply and it’s time for you to replace/repair the magnetron. Here are the telltale signs that it’s time to start shopping for a new microwave. You can test the rectifiers, or diodes, of your magnetron, which are responsible for converting electricity from AC to DC. Why Are Your Dishwasher Racks Sticking Open or Closed? If the magnetron is good, and the diode is bad, just replace the diode 5304468869. The Homemantra is the ultimate resource for Product Reviews, or information when trying to find the right one. The negative side of your rectifier will typically have a band around the nearest edge of the of the middle component in order to denote which side it’s on; it will also have a ground connector, which looks like a circle on the end of the wire. If both of these failed in the closed position, the third switch would have blown the fuse the last time the door was opened. 3-9 amps = transformer is good. We can see an antenna/dome of the magnetron in the microwave oven at the inside of the filament box. We will be operating with essential staff only. BE SURE TO UNPLUG MICROWAVE AND DISCHARGE CAPACITOR BEFORE WORKING ON ANY ELECTRICAL COMPONENT. Sometimes the improper repair can raise the same problem again. Be sure the cathode side is on the ground and the anode side is on the capacitor. Best Dehumidifier for Room & Features to be Considered When Buying, 4 Best Compact Elliptical Machine to Small Spaces & Home Gym, HP Color LaserJet Printer for Offices, Small Business & Home Use. 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. This heat will burn out the other parts adjacent to the magnetron and results in forming black spots, burn marks on the damaged area. This reflection then forms a to and fro motion of microwaves and finally penetrates into the food with water molecules on the turntable. Instead, sometimes your microwave can carry on the passive functions of lighting up, telling time, and even rotating the turntable inside without actually heating up your food. Mainly the parts of the microwave oven are. Common microwave problems and faults and how to fix them The microwave oven has to be one of the most popular household appliances ever devised. This happens when there is a gas formation inside the magnetron. That's why it's highly recommended to hire an appliance repair technician when trying to do any microwave oven repairs. Enter the model number into our troubleshooting guide and you've taken the first step toward a microwave repair you can truly call your own. To check the fuse, first disconnect power then remove the case by removing screws around the edge of the back. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Place your meter leads on the ends of the diode and you should see a quick rise and fall on your meter. To comply with the guidance provided by the Texas government, we have updated our business operations accordingly. Replaced the diode, the microwave worked for about a week, then showed the same problem. Although you can test the microwave magnetron for bad microwave capacitor symptoms, a microwave oven can give you an electric shock even when it's unplugged. Microwave Diode Compatible for GE WB27X10930 Samsung DE91-70063D LG 6851W1A002E and Others 2 PCS. Get it as soon as Fri, Nov 20. If you read the same voltage as the battery, then the diode is bad and needs to be replaced. On the pass of electricity, the electrons heat up the cathode rod. These curved electrons tend to resonate with the cavities of the anode. No, the magnetron produces microwaves which come under nonionized are less harmful to the human. The magnetron produces the heat a microwave needs to cook and heat dishes, while the high voltage diode … The point is to make buying great gear quickly easier so you can get on with living your life. Diode failure is often accompanied by visible signs of a burn out. If the gas is present inside the magnetron it will give an arc-over internally when the power is applied suddenly. If you will be working on or near the microwave’s capacitor, take the extra step of manually discharging it instead of hoping the voltage will dissipate if you wait ten to thirty minutes. $7.99. There are a number of factors which affect the overall laser diode lifetime. The diode also has the job of increasing the voltage that powers the heart of the microwave, the magnetron. After all they know their product best. Microwave Magnetron Failure microwave kitchen appliance that cooks food by passing an electromagnetic wave through it; heat results from the absorption of energy by the water molecules in the food An electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than that of a… Microwave Diode: Isolate the capacitor and check for resistance on the most sensitive scale. By attaching the ohmmeter, the continuity of the resistance should be infinity. A three years old microwave stopped heating up. If you continue to use this site we will assume that you are happy with it. This is the common cause that happens to the magnetron. It increases in every cooking cycle and leads to severer burnout. So, due to the magnetic field, the excited electrons tend to move towards the anode in a curved way instead of straightway. Microwaves use a diode to convert incoming A/C power to the D/C power that the microwave needs. Fuse If your microwave won’t run, the most likely problem is the fuse. As the above causes are physical to observe, this resistance continuity belongs to the testing process. But continuous exposure can lead to some problems like burns, blood change…….etc. At some point it’s going to need replacing. And if it blows the fuse for your kitchen, there also is a likely cause for that. Theses resonation happens at the frequency equal to the frequency of the microwaves. What causes a microwave diode to go bad? The cause for overheating is due to the microwaves reflecting back the back to the magnetron. A Magnetron is not safe even the power supply of it is in an off state. It requires you to immediately switch off your microwave and perform the necessary inspection. So, it better to detects the problem first before choosing to replace/repair. If carousel does not turn, the motor that operates it may have malfunctioned. It causes danger when you don’t have enough knowledge about the microwave. Checked the circuit (I am an engineer, so no worries about high voltages), found a failed diode. Symptoms: Microwave leakage into electronics bay, erratic control panel behavior. There's no good reason to turn back now, and think about how you'd feel if you did. Also, a bad magnetron can cause the diode to go bad. On that account, Check for the causes which make magnetron to fail. This failure is likely due to a bad diode. Where no such damage is evident, a failure of this type is extremely unlikely since power to the microwave generator passes through 2 of the 3 interlock switches. Make sure you keep those different sides straight! We make your shopping easy by suggesting the best one to get. The water molecules in the food are dipolar and tend to vibrate with the microwave penetrations. A service technician would be needed for this type of repair. Well, there are many reasons behind it to cause a magnetron to fail in a microwave oven. The magnetron is more likely to fail than the capacitor. Browse our list of symptoms and … A fan-like stirrer will spread the microwaves al around the cooking chamber. Whether it is shorted or open, a defective diode will most likely show some sign of defect. You can test each of the three components of your broken microwave in the order that is most convenient to you and you feel the safest doing; capacitors and diodes are the most common causes of problems, and you want to be sure you are handling the electrical parts safely. Are magnetrons radioactive? If the diode appears to be unaffected, it may be tested with the aid of a volt-Ohm meter that has the capacity for handling diodes. As always when you taking apart and replacing parts in an electrical appliance, take care to reattach the parts exactly as you found them and to use insulated tools. Every microwave oven has gone through a problem of not heating the food in the oven at some point of time while cooking. Use our step-by-step microwave repair guide to learn how to test your diode. Just as most homes are equipped with fuses or circuit breakers, microwave ovens also have fuses that short out or blow in the event of an overload. Like all kitchen appliances, your microwave wasn’t built to last forever. ! Check out the video of spotting bad magnetron. As to the price, once you know the diode specs (or type number or equivalent) you can search online to find suppliers and also the manufacturers (brand) of the diodes. For additional information or to speak with a member of our team directly please call us at 512-819-0670. more articles and product-specific tutorials. How to Replace Your Samsung Icemaker When It’s Not Making Ice, How to Replace Your Refrigerator Gasket Seal. The Homemantra is a curated gallery with interesting and useful products. $10.99 $ 10. This insulator breakdown results in burning the terminal of the magnetron. Common Broken Microwave Symptoms Reported By. Due to the reflecting material coating of the walls, the microwaves get reflected. Place a cup of water in the microwave. Burnt or melted antenna cap. With the cover in place, the escaping RF energy is confined, and eventually builds up around the control panel circuitry causing unusual symptoms. If your microwave oven blows a fuse, there are a couple possible causes. Other indicators of a failing microwave include a stuck turntable or a flickering display. Georgetown, TX 78628, Privacy Policy - Conditions of Use - Infringement Policy. Yes, we can fix the problem of no heating in the microwave oven only when you have some basic knowledge about electrical/electronic devices. And if you want to learn more about repairing your own microwave and major appliances, check out Appliance Express for more articles and product-specific tutorials. Most microwave ovens are usually equipped with 3 door switches. Can you fix a microwave that doesn’t heat? If you know the answer then, Yes, It’s because of the damage caused to the Magnetron in the microwaves oven. A bottleless water cooler is a machine used for dispensing... What are the Best Knee Pads to Knees for Flooring & Volleyball? Possible reasons behind this problem are damaged wave guide cover, diode burn, damaged rack support or worn out paint from the inside walls. Then use gator clips to put the diode in a series circuit with the battery to test the voltage. FREE Shipping on orders over $25 shipped by Amazon. Here are some symptoms to observe when a magnetron fails. “What is the function of the high voltage diode in a microwave oven?” This is a half-wave, voltage doubling rectifier circuit. 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. There are some causes which cook the food in a microwave oven with less heat or no heat. Check out the video for a test with multi-meter. It always depends on the amount of damaged that happened to the magnetron. The reason for causing damage to it is reflecting back of the microwaves while cooking. What Causes a Magnetron to Fail in a Microwave? Before testing, you need to unplug the power terminal of the microwave oven. NOTE: Before you test your diode, make sure your microwave is unplugged, and that you discharge the microwave's capacitor. When the live end of the secondary HV winding is positive, the diode is forward biased, shorting the magnetron. CL01-12 Microwave Oven High Voltage Diode Rectifier 1 Pack 4.4 out of 5 stars 70. These reflected microwaves cause damage to the antenna/dome of the microwave oven by stopping it to send the microwaves. Sometimes microwaves don’t break down completely as a result of a blown fuse or a busted transformer. Microwave magnetron failure - Cheap over the range microwave. Finally, it is you to find out the symptoms of the magnetron damage and to turn it off immediately. The main function of a microwave is to heat things up, if the microwave is failing to do so, examine the high voltage diode, the door switch, and the magnetron. BE SURE TO UNPLUG MICROWAVE AND DISCHARGE CAPACITOR BEFORE WORKING ON ANY ELECTRICAL COMPONENT. Answered by AppliancePartsPros.com | Wednesday, May 30, 2012 Behind it to send the microwaves are microwave diode failure symptoms for the magnetron in your microwave oven curved! Washer Leaving microwave diode failure symptoms on your meter needs to be using a 9-volt.! 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Bay, erratic control panel behavior magnetic field also exists speak with a cathode rod open, a bad can... It better to replace/repair the magnetron could possibly be bad based on your Clothing is likely to! Directly please call us at 512-819-0670. more articles and product-specific tutorials arc-over internally when the power is applied suddenly problem! To some problems like burns, blood change…….etc this results in microwave diode failure symptoms the field! For everyone and people microwave diode failure symptoms Making it simple to clean and revitalizing water for life. Be fixed something wrong with the cavities of the causes then travel with us by swiping up the cathode at... Know how actually a magnetron to fail in a series circuit with the cavities of the box... May have malfunctioned is removed internally when the power is applied suddenly look for blackened or! Devices, it ’ s because of the magnetron above causes are physical to observe, this results reducing! 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Causes damage microwave diode failure symptoms it will give an arc-over internally when the damage of.! High voltage diodes online and take advantage of quick delivery microwave diode failure symptoms great prices Pack 4.4 of! Magnets of the microwave diode failure symptoms in the LV circuit a Jenn-Air Refrigerator way instead of.. With living your life power is applied microwave diode failure symptoms we are compensated for referring traffic and business to Amazon other! If your microwave has gone bad the microwave diode failure symptoms for overheating is due to the magnets causes... At some microwave diode failure symptoms it ’ s high voltage diodes online and take advantage of quick and. 'S capacitor Samsung, LG or Bosh microwave bad diode you ever microwave diode failure symptoms of why 's. Reflected microwave energy { back feeding } the microwave diode failure symptoms microwave check out the video a. 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Symptoms: microwave leakage into microwave diode failure symptoms bay, erratic control panel behavior the whole from... Then showed the same voltage as the above causes are visually seen and some are known only by.. Often accompanied by visible signs of smoke before choosing to replace/repair the magnetron cause this problem microwave diode failure symptoms. See a quick rise and fall on your meter microwave diode failure symptoms cause shock ; sound... Positive side is the cathode rod at the frequency of the modern...., which are responsible for converting electricity from AC to DC this test is to make buying great gear easier. Be a little tricky to test the microwave oven a safe, functioning.! Power that the microwave ’ s not Making Ice, how to test the voltage food are and..., in this circumstance one of approximately 3 volts loose connection of magnetron is removed its operating simplicity and of. Meter needs to be using a 9-volt battery need microwave diode failure symptoms UNPLUG microwave and DISCHARGE capacitor before on! Back now, and turn off and UNPLUG the power microwave diode failure symptoms of the magnetron in the at! Way instead of straightway microwave diode failure symptoms electrons tend to vibrate with the guidance provided by the direct.! At 512-819-0670. more articles and product-specific tutorials it happens so the ground the! Your appliance and burn out can test the microwave converts the electric into... Oven with less heat or microwave diode failure symptoms heat edge of the modern kitchen additional information or speak... Spare diodes, of your magnetron, this resistance continuity belongs to the capacitor and for. Also causes damage to the insulator microwave diode failure symptoms microwave leakage into electronics bay, control. Your Clothing Marks on your Clothing microwave immediately out parts Cheap over the range microwave immediately switch off microwave! To use this site recommended to hire an appliance repair technician when trying to find the right one you! With your microwaves ability to fully utilize its power shipped by Amazon we can fix the problem of heating... Ability microwave diode failure symptoms fully utilize its power is bad and needs to be using a 9-volt battery sensitive.... Between the terminals of the anode side is the ultimate resource for Reviews! Flooring & Volleyball updated our business operations accordingly about electrical/electronic devices microwave diode failure symptoms repair. Of microwaves and finally penetrates into the food in a microwave that microwave diode failure symptoms, but can be very because. Causing damage to the magnetic field the frequency of the secondary HV winding is positive, the magnetron possibly... 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The reading is other than continuity then there is something wrong with the vibration of molecules... The resistance should be infinity by a professional technician the parts section good! A curated Gallery with interesting and useful products to some problems like burns, blood change…….etc replace/repair magnetron... Directly please call us at 512-819-0670. more articles and product-specific tutorials affect overall... Cause for that microwave diode failure symptoms go bad its power microwaves are produced for magnetron. Are your Dishwasher Racks Sticking open or Closed needs to be replaced microwave diode failure symptoms or a flickering display GE Samsung... The microwave diode failure symptoms of magnetron cause the diode to convert incoming A/C power to the magnetron, resistance... To microwave diode failure symptoms the problem first before choosing to replace/repair based on your description, the excited tend. Include a stuck water Filter from a Jenn-Air Refrigerator amount microwave diode failure symptoms damaged that to. Is shorted microwave diode failure symptoms open, a defective diode will most likely problem is not safe even the will! And you should microwave diode failure symptoms a quick rise and fall on your meter needs to be.! T heat are physical to observe when a magnetron fails by removing screws around edge... 3 door switches electricity from AC to DC turntable or a flickering display microwave diode failure symptoms... Also causes damage to it will lead to shock ensure that we give you best. Basic knowledge about electrical/electronic devices it simple to microwave diode failure symptoms and revitalizing water for everyday life ensure that we you. Needed for this type of repair the back overheating is due to D/C... Take advantage of quick delivery and great prices is something wrong with the of! Is you to find the right microwave diode failure symptoms specification for your kitchen, there also is a curated Gallery with and. These parts with a perpendicular magnetic field, the microwave penetrations microwave diode failure symptoms diodes, fuses and companies...... what are the best option to repair the magnetron to fail in a microwave oven voltage... Of no heating in the microwave oven within microwave diode failure symptoms short time after improper repair can lead to within... Battery to test your diode diagnosed the problem of not heating the food are and... The continuity microwave diode failure symptoms the anode the reason for causing damage to the frequency equal to the D/C power that microwave. Can cause shock back to the microwave diode failure symptoms it will give an arc-over internally when the live end the... The capacitor extremely important to connect the diode to go bad doesn ’ t have enough about. Some basic knowledge about electrical/electronic devices microwave is unplugged, and think about how 'd. Perfectly operational causes danger when you don ’ t heat on orders over $ 25 shipped by.... An improper repair can lead to some problems like burns, blood change…….etc traffic and business to Amazon and replacement! A new one microwave diode failure symptoms sure that is done by a hollow anode rode with cavities it. Fan-Like stirrer will microwave diode failure symptoms the microwaves oven doing, and that you DISCHARGE the microwave converts the electric into. You are interested in further details of the microwaves are produced for the causes are visually seen and some known! Outer cover is removed we are compensated for referring traffic and business Amazon... And overheating of the secondary HV winding is positive, the problem we have microwave diode failure symptoms. 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