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IF YOU SMELLED BURNING TAHTS BAD, IT SOUNDS LIKE YOUR MAG TUBE WENT OUT (ITS WHAT MAKES THE MICROWAVES) iT WILL BE CHEAPER TO REPLACE IT, NEW UNIT STARTING FROM $115 FOR THE SAME MODEL
No that is a very dangerous situation. What is sounds like is you had a short that blew apart but not completely damaging the wires. You should unplug, and open it if its out of warranty and inspect the wires. If the wires are partially burned it can heat up and cause an electrical fire.
The worst thing you can do for any microwave is run it empty as you have found out the hard way. What has happened is RF from the magnetron has reflected back into your magnetron. Some models even have an RF filter window that has the same color as the insode of your unit but a fiber appearance. Running the unit empty causes the RF to burn through this RF filter and stright back into the magnetron itself. Some units have a thermal protection thermostat on the magnetron that turn off the power to the magnetron when it gets too hot. Since you heard a pop you could have a bad load capacitor that has failed or the chassis diode itself has failed. You can take the unit in for service but if they tell you that the magnetron needs replaced I would think hard about having it repaired as the cost can be as much as 50% of a new unit. the Cap and Diode replacements are much more resonable repairs. Good Luck.
Hello jeffnlaur,
The sound you heard could be any number of things but I would attempt to verify the basic preformance of the microwave was ok by placing a cup of water in the cooking compartment and switching the micro on for about 2 minutes.. The water should be close to or at a boil after this time ( depending on glass type and power output of oven). Listen for any other irregular sounds while it is running. You may have heard something in the soup pop or some of the electronics within the micro arc but it may not mean it is dangerous. Try the water test first and if it continues to exibit internal noises and burning a burning smell, I would discrad the oven. Table top models are very inexpensive and the cost to diagnose and repair would probably exceed the cost to replace,
In terms of dangerous, there are safety devices to cut off power to the magnetron and other components if warranted. Not sure that helps you but with limited info from your side, diagnostics are 'iffy' at best..
Regards
Rick
water may have leaked inside unit causing a short.the transformer output is about 1400 volts that feeds a large capacitor. a direct short can blow the transformer instantly or any support parts without time to burn something. creating little or no smell. I never sujest that a person
to try to repair a microwave oven because
the capacitor can still be charged and very lethal.
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