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how to fix lg microwave not heating

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Thanks Paris. The instructions below from DIYers like you make the repair simple and easy. The HV Capacitor does have a 10M internal discharge Resistor, so discharching only needs to be checked with a 2KV Volt Meter. General reply to all (since I am using my mobile for reply): The defective Magnetron was not short at all! If not then th… So, none of the components prior to that failed! Stop oven when popping slows to 2-3 seconds between pops. This also obeys the the rule of the windings ratio (or better said the ratio of their turns, or,finally, the ratio of the primary to secondary voltages). Power Secondary Coil is induction Power Primary Coil of the Transformer. if (navigator.userAgent.indexOf('FBIOS') !== -1 || navigator.userAgent.indexOf('Twitter for iPhone') !== -1) { The second thing is to use exactly the same type of transformers, for proper matching of the coil impedances. Use a multi meter in order to test the diode. I have no other ideas about this. There must be low resistance in one direction and high in the other. It had one or two very long (76mm !) (of course with the safety HV and other Fuses in the circuit). Like all other household electronics, when used frequently or improperly, microwave ovens can exhibit technical problems. When a microwave oven comes to my shop and the owner finds it too expensive to repair… To avoid excessive heating of the glass turntable, place the popcorn bag on a plate. Is it dangerous to repair a microwave? } Microwave ovens are not having good market here, as people have turned away to other methods like Induction Cooker etc. In case of maintenance, one can discharghe it in advance with a screw driver, without causing damage to the surrounding components. Required fields are marked *. But there is another one instead, much much simpler. Next time, it would be 1 - 2 hours to fix this issue. And it probably also protects the circuit in case the 3V (10A?) First they step up the voltage to be sent in long distances where it will be consumed after stepping it down to the usual nominal grid voltages. Many parts also have a video showing step-by-step how to fix the "No heat" problem for LG LMV1683SB. The instructions below from DIYers like you make the repair simple and easy. P.S-If you enjoyed reading this, click here to subscribe to my blog (free subscription). That way, you’ll never miss a post. And both Diode and Capacitor need to be replaced because they both can incidentally produce an internal Short circuit, if it is not the Tube that is shorting (which can be measured from Tube connections to Ground). & working in repairing fields. So, if your LMV2031ST microwave not heating, runs but doesn't heat or turns on but doesn't heat … Or am I asking a stupid question? Checked all connections once again, carried the oven once again to my kitchen, put some quantity of water in a microwave safe plastic container and switched the oven on. It is still unclear dear Parasuraman S to me how and why you should blow a Fuse for that test. As this happens, turn-off immediatelly in order not to damage the surrounding components. As usual, opened the cover and did a thorough cleaning of inside with blower and brush. In addition to all above, you don't need a huge variac for the recommended (no load) test. The oven worked well and the water kept by me for test boiled. It only needs the proper precautions along with more space than that needed for a single isolation transformer of the same wattage. The only thing I don't remember exactly is the time of 60 sec. Concerning the way of test you've described, I do agree that it's really more safe. Avoid calling in the LG service technicians by taking time to familiarize yourself with the microwave. In CRT TV we deal with high frequency pulses which are much more easily detected with a neon lamp, even from a remarkable distance away from the core of the transformer. The magnetron is not repairable—if the magnetron is burned out, you must replace it. There is no other problem. Understood Parasuraman. Current Primary Coil times Input Voltage equals the Induced Secondary Coil Voltage times Current Output (and vice versa). } Does it matter if you swap the connections on the 'F' and 'FA'? But that was until my colleague lateron had injected it with some special Molding Rubber that destroyed it. The fuse wire test is an easy and safe way to test in order to isolate failure of stage. To check whether this is really the issue and to solve it, you need to unplug the microwave and then discharge the high voltage capacitor. If a high-voltage transformer is broken, the operation of a microwave … if (document.getElementById("af-header-413914580")) { The wire got red and blew, indicating that everything was ok until that point, and the problem was indeed in the magnetron.  (Caution: This portion of the output handles around 5000V! Fullscreen. If the magnetron burns out, the microwave won’t heat. This did not occur every time something was heated. And if any arc still does destroy anything at all, it probably only will be the little Neon Bulb. Thanks in advance for your valued answer! if (document.getElementById("af-footer-413914580")) { WARNING!! Hi Parasuraman The Model number of this Magnetron is 2M213, and mounting clamps were on the front.

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