David Griffith wrote:
It's the mainboard of a Macintosh G5 dual.
Appearance really isn't an
issue as the board will be concealed anyhow. Since I now know that he's
watching, let's see if he'll chime in on what needs to be done.
I did some trace repair work on an Acorn A3000 after it befell a similar fate.
I was modifying an internal mounting post so I could fit a DIN connector to
the side panel (why, for the I2C bus of course) and slipped. The file ripped
up three tracks on the top of the board and made a rather large gouge in the
fibreglass PCB...
Took nearly two hours to repair, including repairing the PCB substrate itself,
waiting for the Araldite to dry, soldering in patch-wires, repairing a damaged
via, and testing the thing. After I finished, I used an Electrolube "CPL" pen
to put a coat of protective lacquer over the repair (utterly pointless in
hindsight, but I did it anyway).
IIRC I used individual copper strands from a piece of speaker cable, tinned,
then soldered to the (tinned) ends of the broken PCB track. Where there was
any question as to the future reliability of a solder joint, it was coated in
rosin flux then reheated.
Said A3000 still works to this day...
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