🚀 go-pugleaf

Simon Phillips <s@netcomuk.co.uk> wrote:

> A friend of mine had a roof leak which resulted in water penetrating his
> Mac 6200. He checked the motherboard and found that there was green and
> white oxidation near the back of the m/board (not near the Motorola CPU)
> and that it was effectively knackered. The local Apple dealer has quoted
> him over 300 pounds plus VAT to change and fit the m/board. Any one know a
> cheaper option? Your help and/or advise would be greatly appreciated.

Careful cleaning might well get it fixed, assuming the electrical
problems caused by the water damage haven't destroyed anything when he
first tried to turn it on.

I'd be inclined to get hold of some meths and some switch cleaner, some
old toothbrushes (which dissolve in lots of organic solvents so stick
with meths when you use these), some cotten buds (but be aware that
these are inclined to leave threads behind which you should watch out
for) and maybe some lint-free wipes if that's practical.

And sit down with the logic board and anti-static precautions and get it
clean - clean off as much as you can with a dry toothbrush, then clean
it as well as you can using meths, a cloth, and a toothbrush.  When
you're doing this, make sure you don't scrub dirt further in to any
sockets - avoid cleaning those areas rather than ram more dirt in.

And once you've cleaned it as well as you can like that, unplug anything
that's plugged in one at a time, clean off any ick that's not on
electrical contacts as best you can, then clean the contacts with switch
cleaner.  I'm inclined to use cotton buds soaked in switch cleaner to
wipe pins (carefully! - don't bend them), and then spray switch cleaner
into the socket, over the pins, and take it through a complete mating
cycle and repeat until it looks like it's clean.

Rowland.

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