18 Jul
2000
18 Jul
'00
1:26 a.m.
On Tue, 18 Jul 2000 13:17:12 +0100 Adrian Graham
<agraham(a)ccat.co.uk> wrote:
Now there's a question - I've just got back
from a little expedition to
Maplins (butane gas, digital multimeter since I'm sure work's analogue one
is iffy since I dropped it :), T10 and T15 torx bits etc (I WILL get into
that Mac Plus))
You'll need a REALLY LONG T-15! I found a longish 1/4 inch
hex-drive Torx bit and a slender 1/4 inch hex extender. If
you're very lucky/keen, you can get a special Mac
screwdriver with is T-15 and about two feet long!
then I'll have to teach myself how to resolder
non-socketed chips! (in the
case of the atari anyway)
If you're absolutely sure it's a dead chip, the safest way
to replace it is to snip all the legs off, one by one, and
then unsolder them. Your goal is to save the (unique) PCB
and replace the (not unique) chip. PCB foil will come
unstuck if heated for a while, especially on cheaper PCBs,
such as were used in early 1980s home computers...
--
John Honniball
Email: John.Honniball(a)uwe.ac.uk
University of the West of England