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Old 09-06-2008, 02:20 PM   #1
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Electrical "Snap"


I have a bathroom fan that is on the same circuit as the outlet that I have my TV and stereo on.

When the TV/stero is on and I turn the fan switch off, I get a loud "snap" (some type of interference) sound from the speakers. This does not happen when I turn off the light in the bathroom (it is on the same circuit as well).

I pulled the cover off the fan and the motor has a two-prong plug on it that plugs in the fan chassis. I plugged a lamp into the chassis outlet, flipped the switch on and off and no "snap". Plugged the motor back in and tested - "snap".

Is this a problem with the internals of the motor? Seems to me it is. I understand circuit wiring, but am basically ignorant when it comes to electrical motors.

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Old 09-06-2008, 07:03 PM   #2
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Electrical "Snap"


Ive has this before, don't worry its very common, the motor pulls a fair amount of current when on, and when you turn it off it creates interference on the line. Nothing bad with the motor, this is common even with new motors, its probably because your speakers don't have a lot of isolation from the ac. Thats ok, you can buy filters for your electronics. Don't fall for monster, they overprice their hardware. I had 2 computer speakers that made pops when ever lightning flashed during a thunderstorm, and they were on a surge suppressor. P.S. (unplug expensive electronics during thunderstorms when you can)

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Last edited by rgsgww; 09-06-2008 at 07:04 PM. Reason: needed a few details
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Old 09-07-2008, 12:20 PM   #3
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Electrical "Snap"


Get the fan off of that circuit.
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Old 09-07-2008, 02:45 PM   #4
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Electrical "Snap"


Yeah...Get the fan off of the circuit, it shouldn't be there, move it to a lighting circuit that has some space or something...
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