[GLLUG] Recommendations for computer repair in North London

[tid]

I've replaced the thermal compound on 2 friends' laptops recently when they
were experiencing similar symptoms. I googled videos first for the exact
model and 'replace thermal compound' and bought a small tube of compound
off ebay. The worst aspect is getting all the screws out. You have to
scrape the old compound off carefully and don't use a metal edge for this -
cut up an old plectrum, or in my case, and old credit card. Clean the fan
with a soft brush gently as well as the fan exhaust.

Tid

On 5 February 2016 at 21:39, Chris Bell <chrisbell at chrisbell.org.uk> wrote:

> On Friday 05 Feb 2016 21:11:20 Adrian McMenamin wrote:
>
> > On 5 February 2016 at 20:49, Chris Bell <chrisbell at chrisbell.org.uk>
> wrote:
>
> > > Does the fan seize up / need oil? Sleeve bearings dry out but can be
>
> > > oiled by peeling the label, removing any rubber plug, and dropping some
>
> > > clean oil in before replacing the label. It requires a good quality
>
> > > light oil that can stand increased temperatures without getting sticky,
>
> > > I have used vehicle ATF and Castrol HiSpin.
>
> > >
>
> > > Is the heat sink blocked below the fan body? The fan is usually held on
>
> > > the heat sink with 4 screws. Fresh heat transfer compound will be
>
> > > required if the heatsink is moved.
>
> > >
>
> > > Is the fan power connector the correct way round? Most (but not all)
>
> > > motherboards have the same connections, and are often marked.
>
> > >
>
> > >
>
> > >
>
> > > Chris Bell
>
> >
>
> > It's not my computer, I don't have it and I have no means of testing it
>
> > further. So I know you are trying to be helpful, but what I really need
> is
>
> > a recommendation of someone to look at it.
>
> >
>
> > FWIW though - the connector is on correctly (at least it was when I
> looked
>
> > at it) and the heat sink is on correctly.
>
> >
>
> > The box will run for about 15 minutes if cold, then the fan stops and
>
> > shortly after it shuts down completely because of (I assume) overheating.
>
> > If booted warm then this can all take place much more quickly.
>
>
>
> Another common problem is heat transfer compound patchy or dried out.
> There can be air gaps unless it is piled in the middle and allowed to
> spread as the heat sink is clamped in place.
>
> I have found very few faulty fans that will start normally but then fail
> unless the bearing is dry.
>
> These are easy checks that cost a little time but very little money. Just
> remove the mains power cable first. If you are worried about static
> electricity damage, prefer cotton clothing, and touch the metal case first.
>
>
>
> Chris Bell
>
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>
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