On Dec 2, 2009, at 1:54 PM, Seth Morabito wrote:
Late 80's
Macintosh logic boards are worth more if the
electrolytic caps
that are leaking acetic acid are removed and the board is cleaned up.
I didn't realize how serious a problem this is for late 80's
electronics
in general. The museum has been removing batteries from artifacts
for a
while now, but I don't know how we're going to deal with trace rot
on all
the PCBs with leaking surface mount electrolytic caps.
Indeed, there seems to be a mass die-off of vintage Macintoshes
going on
right now judging by the buzz on 68K mac enthusiast message boards. My
own SE/30 refused to boot about a month ago, showing the classic
"Simasimac" zebra-stripe failure. On inspection I found that _every_
surface mount electrolytic cap on the board was leaking. I had to
re-cap
the entire board -- only 11 caps, but my smd hand soldering skills are
just fair to middling.
I do surface-mount soldering all the time. I wouldn't mind
setting up a little side business doing this type of rework for people.
-Dave
--
Dave McGuire
Port Charlotte, FL