(function() { Save my name, email, and website in this browser for the next time I comment. I know that there Just for safety reasons alone, it would be wise to use proper fusing in this construction. It is to make troubleshoot simple, that is all! I have no other ideas about this. Did Screwdriver shorting. Posted by 4 hours ago. The magnetron is not repairable—if the magnetron is burned out, you must replace it. document.getElementById("af-footer-413914580").className = "af-footer af-quirksMode"; But it was not functional! Of course you can Albert. Is it Right or Wrong. 0:00. Of course provided that mains voltage is applied to the big transformer. WARNING!! if (document.getElementById("af-header-413914580")) { Concerning the way of test you've described, I do agree that it's really more safe. Common solutions for: LG Microwave not heating 01 - Diode The diode converts the A/C power output of the transformer to D/C, doubling the voltage to nearly 5,000 volts. Stop oven when popping slows to 2-3 seconds between pops. } Only to confirm that the output is correct using the ratio of the voltages you see. The second thing is to use exactly the same type of transformers, for proper matching of the coil impedances. So removed all connectors one by one, cleaned and lubricated and refit these back in its place. document.getElementById("af-header-413914580").className = "af-header af-quirksMode"; Thanks you Again to supply the input mains voltage in the secondary winding and (quite safely) to measure the output developed at the primary. Your explanation is excellent! All the rest are true. It had one or two very long (76mm !) if (document.getElementById("af-footer-413914580")) { It is the magnetron that creates the 'heat' so whilst it may not be the magnetron itself that is the problem (but perhaps some components that supply the magnetron) you could be voiding the warranty on the magnetron if you attempt to open the microwave … Follow our troubleshooting steps to solve the problem. LG microwave not heating. What I did was to put in a cup of water and set the timer to 20 seconds and let it run. They simply will measure much lower voltage. As this happens, turn-off immediatelly in order not to damage the surrounding components. Your microwave may display “PF” (for “power failure”) or the numbers “8888”, which is a common code that indicates the microwave lost power. Still it seems a dangerous and avoidable way to test and 'really see' if the HV circuit works. To avoid excessive heating of the glass turntable, place the popcorn bag on a plate. My microwave stopped working. })(); (Please see the picture above). Use a multi meter in order to test the diode. But that was until my colleague lateron had injected it with some special Molding Rubber that destroyed it. postage fee from china to India is 30 usd Unplug your microwave before beginning this inspection. I have a LG microwave that powers up but does not cook. And also it not a better option to repair when you are alone at home. And of course there is also the Primary Glass Fuse 32mm (About 15A). I only have a doubt: in CRT sets, the high voltage is about 15 kV or even higher. You may also check on the article about Microwave Oven repair by Humberto and Sam: https://jestineyong.com/faulty-big-capacitor-in-microwave-oven/, Want to know about these type of high power capacitor Discharging technique. Let us say, 3 or 4 millimeters. To enable all features please, YAF.NET © 2003-2020, Yet Another Forum.NET. // , How To Repair LG Microwave Oven Not Heating. This LG microwave oven MS-1921HE belongs to my cousin, and during our family visit to their home, his wife told me that it was not heating up, though it was getting on and rotating (runs but doesn’t heat). Please give a support by clicking  on the social buttons below. ... kitchen utensils, drills, chainsaws, and machines of all ilk. The idling current of the transformer in this case is under normal conditions very low in comparison to its full load one.