[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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