Question about Samsung Microwave Ovens

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WHAT IS CAUSING HUM & RATTLE AT CYCLE START UP?

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It could be a loosened screw that holds the panel cover or a worn out rubber base insulator.

Posted on Nov 09, 2010

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Posted on Jan 02, 2017

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Bosch microwave model HMV9305/01. Heats fine, but even after cycle ends, it hums continuously. Is this the magnetron? If so, does this indicate a faulty door switch?


open the door after turnoff and see if hum disappears. If so it may be the magnetron is still on. If stops the hum could be from some other component ala the turntable motor, fan, etc.

Aug 23, 2017 | Bosch Microwave Ovens

1 Answer

Loud hum in my ge rc7200


More than likely the Magnetron is bad, causing the transformer to over heat. Or it could just be the transformer going bad. Either way not a good situation. Both are expensive.

Dec 13, 2014 | GE Microwave Ovens

1 Answer

Microwave won't start but rattles when close door.


It is possible you have one or more door switches that are bad and need replacement.

May 05, 2012 | GE Microwave Ovens

1 Answer

When you start the microwave it starts normally with a low hum, then a couple of seconds into it the hum gets louder. After the cook time has expired the food is still frozen. Is there something I can do...


Replace the magnetron by the sounds of it. The hum gets louder a second or so into "Cooking", that would comply with the magnetron heaters coming on and working into a dead magnetron. It could be capacitor or diode of course.

Dec 27, 2010 | GE JVM1540SMSS Microwave Oven

1 Answer

Loud RATTLE LIKE HUMM!!


That's what they do - plenty of focused energy at work here. However, try removing the rotating food tray and, with just a glass of water in the oven (never run it empty!) see if the hum goes away. If so, it's the tray driver/carrier.

May 26, 2009 | Emerson MW8779W Microwave Oven

1 Answer

...have Danby 1.0 cu. ft.


When talking about "Power Level", there is a misconception that the cooking power is being adjusted. This is not the case. The user is actually adjusting the duty cycle of the Magnetron. For instance at 30%, the Magnetron will be turned on for 20 sec. and off for 40 sec. A loud 60 cycle hum is usually caused by a shorted Magnetron. Thus the unit is not economically repairable.

Sep 30, 2017 | Danby Microwave Ovens

2 Answers

Microwave rattle


On some models, the right side of the case is pretty close to the high-voltage transformer. What's normally done is a rubber block is glued to the side of the transformer to keep it from getting so close. In other cases it may be something loose in the fan, stirrer, etc. It really has to be checked to know for sure.

Mar 18, 2007 | GE JVM1640 Microwave Oven

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