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From: Sara on 24 Mar 2010 12:25

20" iMac

Just replaced the HD and now the fans are running full on all the time.

I opened it up again to have a look at the heat sensors and they both
(the one on the HD and the one on the optical drive) were barely
attached so I refixed them with double-sided tape to the holder, not to
the sensor itself. Put machine back together and no difference, lots of
fan.

I'm wondering if the part of the HD the sensor is attached to is the
problem, the old drive had a completely smooth section that it was fixed
to, the replacement has all kinds of gubbins on it - by which I mean
slightly raised writing and patterns. Could this be the problem?

Any other suggestions?

--
Sara

Hurrah - the weather has cheered up
From: Jaimie Vandenbergh on 24 Mar 2010 12:52
On Wed, 24 Mar 2010 16:25:37 +0000, Sara
<saramerriman(a)blueyonder.co.uk> wrote:

>
>20" iMac
>
>Just replaced the HD and now the fans are running full on all the time.
>
>I opened it up again to have a look at the heat sensors and they both
>(the one on the HD and the one on the optical drive) were barely
>attached so I refixed them with double-sided tape to the holder, not to
>the sensor itself. Put machine back together and no difference, lots of
>fan.
>
>I'm wondering if the part of the HD the sensor is attached to is the
>problem, the old drive had a completely smooth section that it was fixed
>to, the replacement has all kinds of gubbins on it - by which I mean
>slightly raised writing and patterns. Could this be the problem?
>
>Any other suggestions?

I've never taken an iMac apart, but on the pre-2009 Mini there's a
tiny black on black connector hidden in a small black alcove, that if
you forget to reattach means the fans stick on full tilt.

Cheers - Jaimie
--
"Never go to bed angry, or on fire." - Gomez Addams
From: Martin S Taylor on 24 Mar 2010 22:19
Sara wrote
> 20" iMac
>
> Just replaced the HD and now the fans are running full on all the time.

Thanks for the warning. I'm following this thread keenly, as I have to do the
same job on my iMac (24") this weekend.

MST

From: Sara Merriman on 25 Mar 2010 03:44
In article <0001HW.C7D078A1005A9552B01029BF(a)news.virginmedia.com>,
Martin S Taylor <mst(a)hRyEpMnOoVtEiTsHm.cIo.uSk> wrote:

> Sara wrote
> > 20" iMac
> >
> > Just replaced the HD and now the fans are running full on all the time.
>
> Thanks for the warning. I'm following this thread keenly, as I have to do the
> same job on my iMac (24") this weekend.
>
> MST

I changed the HD in a 24" last year without any problems. A couple of
the screws are in awkward places and need a blob of blu-tack on a
screwdriver to get them down into position before tightening, but
otherwise it's not too bad a job.

--
Sara

Cuddler of rats, cats and husband
From: J. J. Lodder on 25 Mar 2010 04:11
Sara Merriman <saramerriman(a)blueyonder.co.uk> wrote:

> In article <0001HW.C7D078A1005A9552B01029BF(a)news.virginmedia.com>,
> Martin S Taylor <mst(a)hRyEpMnOoVtEiTsHm.cIo.uSk> wrote:
>
> > Sara wrote
> > > 20" iMac
> > >
> > > Just replaced the HD and now the fans are running full on all the time.
> >
> > Thanks for the warning. I'm following this thread keenly, as I have to
> > do the same job on my iMac (24") this weekend.
> >
> > MST
>
> I changed the HD in a 24" last year without any problems. A couple of
> the screws are in awkward places and need a blob of blu-tack on a
> screwdriver to get them down into position before tightening, but
> otherwise it's not too bad a job.

A magnetic screwdriver does have its uses,

Jan
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