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sjack12
Beginner
156 Views

what is 12w27 stand for

i have intel dh67cf motherboard ,i found the system fan have some problem,when the temp goes up,the speed of fan goes down,i found a part called 12w27,that in the fan control circuid damaged.it is a n-mos or not,what it’s parameter ?thanks

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5 Replies
AlHill
Super User
71 Views

Provide a photo.

 

Doc

 

sjack12
Beginner
71 Views

IMG_4239.JPG

the part located in this area of the board(two n-mosefet?),beside the superio IC.

IMG_4240.JPG

looks like this

IMG_4242.JPG

similar to this kind of electronic part

IMG_4243.JPG

but the silk-scree is this

IMG_4241.PNG

there are two 12W27,on board test of the good one is like this,3v pwm in ,3v pwm out inversely.

The bad one has no output signal.Then I get a part silked 702:z from other kind of board to replace this,the fan can be controled in the right mode(tempreture ups speed ups),the out put like the following red line(a little lower than normal).So I want to get the exect type of the part,enable to make the scope seems good.Thanks.

IMG_4244.PNG

 

 

AlHill
Super User
71 Views

sjack12
Beginner
71 Views

I have searched this before,get no correlative result.

AlHill
Super User
71 Views

One of the intel support engineers will assist you.

 

Doc

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