Re: HD Fan speed.

2011-02-09 Thread Jay Smith
Now I read somewhere and as best as i can remember, a chap swapped out the 
apple hard drive for a new one in his iMac and the fan simply went full belt 
constantly.  He claimed that he discovered that apple place a jumper on their 
hdd's to control the fans. He took out the new, replicated the jumper position 
on the original hdd and it worked. V 

Sent from my iPhone
> 

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Re: HD Fan speed.

2011-02-09 Thread Jonathan Smith
Have you installed or are you aware that Apple have temperature sensors
plugged into their hdd's?

It is much like a jumper and if you have missed it, this will account for
why the fans are spinning full wack.

Hope this helps

Jay

On 9 February 2011 16:16, Stuart  wrote:

> I have an iMac 21.5" 3.06 GHZ Intel Core i3.
>
> Orig HD 500 GB HD packed up so I took the opportunity to replace it
> with 1T Seagate. Now HD fan starts slowly ~ 1,000 rpm, but after half
> an hour or so is doing 5400 rpm. Stays there. Temp all the time is
> cool at 41°C. (smcFanControl says temp 0°C, 5400 rpm)
>
> Service said HD Fan overspeed is because 1T seagate is not an Apple HD
> & I have to live with it. Bit of a tall one if you ask me.
>
> I have tried FanControl and smcFanControl to no avail.
>
> Would anyone have any solutions? It was really great - before.   ;-(
>
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Re: HD Fan speed.

2011-02-09 Thread Deiniol ap Deiniol
As 0 degrees Centigrade is freezing point - what exactly is
smcFanControl measuring here? Is HD drive temp measured by an external
probe or is it an onboard function - I use iStat menus, and hard drive
temp measurement seems to be a function of SMART monitoring, but in my
G4 iMac it just shows one measurement of 41 deg C, which I presume is
CPU temp.
 Is an NVRAM reset perhaps the solution here?  Just a thought - but
I'm waiting for Bruce or Dan, who usually seem to have the answer on
this sort of problem.
Dan (the other one!)

On Feb 9, 5:49 pm, Walter Sheluk  wrote:
> On 11-02-09 9:16 AM, Stuart wrote:> Now HD fan starts slowly ~ 1,000 rpm, but 
> after half
> > an hour or so is doing 5400 rpm. Stays there. Temp all the time is
> > cool at 41 C. (smcFanControl says temp 0 C, 5400 rpm)
>
> Curious as to what app you use or how you  get those numbers because i
> have the same iMac albeit with a factory installed 1T. So i would like
> to test my machine.

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Re: HD Fan speed.

2011-02-09 Thread Walter Sheluk

On 11-02-09 9:16 AM, Stuart wrote:

Now HD fan starts slowly ~ 1,000 rpm, but after half
an hour or so is doing 5400 rpm. Stays there. Temp all the time is
cool at 41°C. (smcFanControl says temp 0°C, 5400 rpm)
Curious as to what app you use or how you  get those numbers because i 
have the same iMac albeit with a factory installed 1T. So i would like 
to test my machine.


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Re: HD Fan speed.

2011-02-09 Thread Tim Stephens
On Wed, Feb 09, 2011 at 08:16:07AM -0800, Stuart wrote:
> I have an iMac 21.5" 3.06 GHZ Intel Core i3.
> 
> Orig HD 500 GB HD packed up so I took the opportunity to replace it
> with 1T Seagate. Now HD fan starts slowly ~ 1,000 rpm, but after half
> an hour or so is doing 5400 rpm. Stays there. Temp all the time is
> cool at 41°C. (smcFanControl says temp 0°C, 5400 rpm)
> 
> Service said HD Fan overspeed is because 1T seagate is not an Apple HD
> & I have to live with it. Bit of a tall one if you ask me.
> 

It's quite likely that your new hard drive runs hotter, particularly if you've 
installed one with a faster RPM. I've seen this on several machines that I've 
upgraded. 

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HD Fan speed.

2011-02-09 Thread Stuart
I have an iMac 21.5" 3.06 GHZ Intel Core i3.

Orig HD 500 GB HD packed up so I took the opportunity to replace it
with 1T Seagate. Now HD fan starts slowly ~ 1,000 rpm, but after half
an hour or so is doing 5400 rpm. Stays there. Temp all the time is
cool at 41°C. (smcFanControl says temp 0°C, 5400 rpm)

Service said HD Fan overspeed is because 1T seagate is not an Apple HD
& I have to live with it. Bit of a tall one if you ask me.

I have tried FanControl and smcFanControl to no avail.

Would anyone have any solutions? It was really great - before.   ;-(

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