test internal laptop fan externally

February 22, 2009 at 10:32:36
Specs: Windows Vista, intel core 2 6420, 2gb
hi,
i know very little with regards to laptop components, but im replacing the fan unit in my *OLD* toshiba a30 and i wanted to know if there was a way i can test the fan i remove by another means? such as plug it in on a desktop etc?
in short its a double fan unit, and im unsure if one of them is functioning, if i can hook it up on something else to test then i will know.
i understand there may be a voltage difference between desktop and laptop fans however.
suggestions / comments.
ive been told that one of the fans in the unit only turns on at certain points, however i am nearly convinced this is not the case, the only way i can be certain is by testing externally. this will allow me to either just replace the fan unit or give up the laptop for a loss as it will imply that its a internal sensor problem - which i am not qualified to fix and i refuse to pay to get it repaired again.

Chez


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#1
February 22, 2009 at 15:21:32
If you have a 9 volt battery and some wires to hook the fan up to the battery, that should work.

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#2
February 22, 2009 at 16:15:16
wow thats the sort of thing i was looking for!
ill give it a go as soon as the new one arrives /or when i remove the old one maybe.
is there anything i need to be careful with?
the usual positive to positive?
how do i know which to hook to which?
are the wires visible on the laptop fan's connector?
is it red for live, black for negative?
sorry its been a long day and im forgetting my basics

Chez


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#3
February 22, 2009 at 16:50:38
It doesn't matter which way the wires are connected. The fan will turn clockwise with the wires connected one way, and counter clockwise if reversed.

You will have to come up with a way to do the connections yourself.


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#4
February 23, 2009 at 11:36:22
i thought that it would spin clockwise and anticlockwise depending but i didn't want to put that in case i was wrong!
i have an idea about the connections with im going to try test with a old desktop fan, although i know they require more voltage but its just to see if my connection idea will work - all-be-it a little unsafe, so even a slow spin will help!
will post back if this test run will work and whenever(!) i receive my replacement fan.
thanks for all the help.

Chez


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