[bcab] Re: possible fan problem

Hello Steve
Until I get someone to confirm it, I think it is the power suply unit where
the fault lies, since I had a cursory feel inside and the power supply fan
turns without any friction.
cheers
Alan
----- Original Message ----- 
From: "Steve Crawford" <steve@xxxxxxxxxxxx>
To: <bcab@xxxxxxxxxxxxx>
Sent: Saturday, January 27, 2007 11:52 PM
Subject: [bcab] Re: possible fan problem


> Hi Alan,
>
> There are at least 2 fans in the PC, one inside sitting on the processor
and
> one on the power supply. The one on the power supply is bigger and,
> therefore, makes the most noise when it's working. Unfortunately that's
the
> harder of the two to replace. With the processor fan you just buy a new
> heatsink and fan and it's easy to fit. With the power supply fan you have
to
> remove the power supply unit, unscrew the power supply, unscrew the fan
and
> disconnect the wire to the board. Sometimes there's no connector and it's
> soldered directly to the board of the power supply. So it's a real mission
> to change it.
>
> You can oil the fan to get it moving again but that's just as tricky as
you
> have to get the fan out so you can peel off a sticker in order to add a
drop
> of oil to the bearing. But that's worked for me in the past when I haven't
> got another fan to use.
>
> But the big question is whether it really is the fan. In my experience
they
> don't just stop without warning. They make strange, grinding noises for a
> while mixed with normal sounds before they pack in completely. And if it
has
> stopped - basically because there is too much friction - you can kick
start
> it. You turn on your PC and stick a pencil or similar instrument through
the
> grill at the back - perhaps use something that isn't a conductor if you
feel
> nervous - and flick the blades. That will normally kick it back into life
> and you'll know that the problem is the fan.
>
> If it's just that the fan is broke the computer should begin to start up
> andd you'll hear the usual beep at the beginning and there'll be the
flicker
> of lights on the keyboard and, of course, the screen will show it's
booting
> up. But without the fan moving it will overheat after a while.
>
> Obviously you shouldn't use it if the fan isn't working but it shouldn't
be
> difficult to work out if this is the problem rather than it being, say, a
> fuse.
>
> Cheers,
> Steve
>
> -------------------------------
> Azabat Software: accessible games for visually impaired beginners
> Web: www.azabat.co.uk
> Email: mailto:steve@xxxxxxxxxxxx
> Tel (UK): 07740 777 364
> International: +44 7740 777 364
>
> -----Original Message-----
> From: bcab-bounce@xxxxxxxxxxxxx [mailto:bcab-bounce@xxxxxxxxxxxxx]On
> Behalf Of alan rayner
> Sent: 27 January 2007 15:54
> To: bcab@xxxxxxxxxxxxx
> Subject: [bcab] possible fan problem
>
>
> Hello folks
> when I came to boot up the other day, there was no sound from the tower,
> there was no sound of the fan  as usual, and there seemed no sign of
> activity except that there was a slight heat at the top back of the tower.
> I am just assuming that the fan has gone, although it could be something
> else.  If it is the fan, are they easy to replace?
> cheers
> Alan Michael Rayner
>
>
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