2 Jan
2015
2 Jan
'15
2:39 a.m.
I've repaired many...I usually take off all the components of the affected
area, wash it with vinegar (!) to neutralize the electrolyte, wash again
with alchool or MEK (Metil-Etil-Ketone, cancerous and very dangerous
solvent) and rebuild the traces with very thin (awg 30) wire-wrap wire. It
always works (for me) :)
I've spent someday 6 hours to recover a board. In Brazil it is worth it!
good luck!
On Fri, Jan 2, 2015 at 7:36 AM, Peter Corlett <abuse at cabal.org.uk> wrote:
On Fri, Jan 02, 2015 at 01:23:14AM -0500, Ethan Dicks
wrote:
[...]
You didn't say what kind of A4000, but I'm assuming you are referring to
the
Amiga, as this is a known problem.
I know the general process, but I'm curious
if anyone has done this
specifically to an A4000 board and has any tips. As I said, I'm probably
going to have to pull the DIMM socket to get to all the damage.
I've never had much luck with this kind of repair, but the A4000 repair
always
sounded particularly difficult and liable to fail. Still, if you've got
the
right tools and are patient and careful, you won't be worse off than if you
didn't bother at all.
Barring success from running a dozen or so repair
wires, would anyone
happen
to have a lead on an A4000 motherboard?
Everything else in the machine
should be good, the Daughter Card, the CPU card, etc...
I've got a surplus spare from a part-stripped carcass I bought back in
2001 to
try and clear a fault in my own A4000. However, a motherboard swap failed
to
clear the fault I had. What this would imply is that both boards are OK
since
the failure was sufficiently bizarre that it was unlikely that both would
fail
identically, but since I've not conclusively seen either of them work for
nearly two decades, I wouldn't like to offer any sort of guarantee.
These boards also turn up on eBay in the USA, which might be a better
bet. As
far as I can tell, the same boards were used in both NTSC and PAL machines
and
a jumper configures the video standard. (I sometimes re-jumpered mine for
NTSC
to reduce display flicker.)