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  MSI fx 480 fan makes noise during shut down? vibration when dvd is accelerating? 
 
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mehdi sheshband Dec 04, 2011, 02:20am EST Reply - Quote - Report Abuse
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Edited: Dec 07, 2011, 01:12am EST

Replies: 2 - Views: 1616
My MSI FX 480 makes a sound like hitting a part as it decelerates its speed to zero .
I just bought thwe laptop and don't have the time to send it back to the dealer.
is that noise common or ... ?

Also I noticed another issue when I inserted a DVD the other day , It vibrates abnormaly as it increases speed.


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Meats_Of_Evil Dec 10, 2011, 09:43pm EST Reply - Quote - Report Abuse
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>> Re: MSI fx 480 fan makes noise during shut down? vibration when dvd is accelerating?
Could be a loose screw. Jiggle the laptop a bit while it's powered off and check for any rattling sounds.

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john albrich Dec 10, 2011, 10:18pm EST Reply - Quote - Report Abuse
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Edited: Dec 10, 2011, 10:19pm EST

 
>> Re: MSI fx 480 fan makes noise during shut down? vibration when dvd is accelerating?
.
That COULD indicate a fan that has early bearing failure or is not properly manufactured. When some of these fans spin-up to speed or down to zero , the fan blade assembly moves back-and-forth axially much more than it should along the center of rotation. That sometimes produces noise as the mechanical orientation changes how well the bearing works. The noise can also be caused as the fan blades contact something they weren't in contact with when running at higher speeds...again due to that undesirable back-and-forth axially movement. In that case, it could be a stray wire, or piece of insulating shield (I've seen both come into play).

I've seen this mechanical problem crop-up on LOTS of the "tiny fans" (40mm and smaller), especially the cheap sleeve-bearing fans, but usually only after a year or more of constant use.


As a diagnostic, you might try holding the laptop in an upside down orientation as you power it off (or do whatever you did before to get the fan to spin down to zero), and repeat holding the laptop vertically...and see if the sound disappears or becomes worse in either orientation. If it changes as a result of the laptop's orientation, this type of mechanical action is more likely at least partly responsible for the intermittent noise.


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