Microwave still heats but about 1 out of every 10 times I use it there is a loud booming noise and then a terrible burning chemical type smell. I immediately shut it down when it happens but the next time I use it heats fine.
Is there any holes burnt into the liner inside the micro wave.? Or burn spots showing.? If there is thow it out. It is not safe to be useing it.It could start on fire. That problem is from when they are not clean out once in a while. End food is burn,t onto the interior liner end grease end oil,
Nothing showing on the inside of the microwave. It is clean and no signs of burnt areas.
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If the microwave is loud or noisy only when cooking, the magnetron tube might be defective. The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. Under normal circumstances the magnetron is nearly silent. However if it is damaged or nearly burned out it can begin emitting high pitched or growling noises. It's not normally dangerous to use a microwave oven when it makes these noises, but they are an indication that the magnetron is almost dead and will need to be replaced.
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If the microwave is loud when running the fan motor might be
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If the microwave is loud or noisy the stirrer motor might be worn out. The stirrer is a metal blade which slowly turns around, deflecting the microwave energy in a random pattern inside the microwave oven. As the motor nears the end of its useful life it begins to make grinding noises. The microwave will not heat food evenly without this stirrer, the motor should be replaced.
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If the microwave is loud or noisy the turntable motor might be worn out. This is a common problem and relatively easy to replace.
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