>
> Date:    Sat, 22 Jan 2000 17:51:28 -0800
> From:    Yui Shin <[log in to unmask]>
> Subject: Re: lap top and battery - fan
>
> ----- Original Message -----
>
> > I wonder why a fan would come on in a lap top when the system was off and
> stored in its case?  It was in use and I put it in its case to go and when I
> got to my destination I found that the fan was on, it was a bit
> > worm, but I don't think that worm.
> >
> > At any rate it was in the case for about twenty minutes and there was 69%
> of the battery left, could I have damaged something as it was worm, but not
> hot in my opinion.
>
> I would suspect the laptop was pretty warm to begin with
> and by immediately sealing it in a case, heat could not vent.
> Newer laptops(within a couple years) monitor temperature
> continually in case you leave your laptop in a hot car, etc.
> Your BIOS might have an option to disable the power
> off cooling. Some Winbook laptops list this under
> power management.
>
> As far as damage. Heat is definitely more
> difficult to remedy on laptops due to their
> compact size. I've tested a Cyrix based laptop
> at 88*C before it took out the motherboard
> cache. I don't know if heat really damaged the
> cache, but it can shorten battery life among
> other things.
>
> Also, you may already know this from your
> owner's manual...
> Never close your laptop display while the power
> is on or just after using it for a long period.
> The LCD display is very vulnerable to heat
> rising up through the keyboard. Few warranties
> will cover LCD's damaged by heat.
>
> -yui shin
>
> ------------------------------
>
> ------------------------------
>
> Date:    Sat, 22 Jan 2000 18:06:07 -0500
> From:    "Charles K. MacKay" <[log in to unmask]>
> Subject: Re: lap top and battery - fan
>
> It was probably on standby and not really off, and the unit got warm enough
> for the fan to go on.
>
> Regards,
>
> Charlie

I am concerned that a warm laptop in a closed case, (or worse, surrounded by
clothes in a closed suitcase) would just get hotter and hotter.  All the
energy used by the fan would be converted to heat...

Boyd Ramsay

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