best yardsale in a decade - test-drb@ccmp.vtda.org

6 Feb 2006

Hi
 I think the corrosion is from sulfur in the foam.
If so, I'd suspect it to be an acidic corrosion.
After cleaning with something like vinegar, following
with some baking soda might be a good idea before
the final washing. This should help neutralize any
remaining acid.
Dwight

...
 From: "Pete Turnbull" <pete at
dunnington.plus.com>

On Feb 6 2006, 12:33, <dogas at bellsouth.net> wrote:

  There were a few incredible chips in pile that
the foam really screwed up...  check out:

    http://bellsouthpwp.net/d/o/dogas/chips1.jpg

 There was a ceramic C8080A with the pins completly eaten away , a Ceramic MOS 6532
that faired only a little better, a ceramic/traced AMI
6810, and a early plastic 6502 and 6530 among the more conventional
stuff.  Any recommendations on neutralizing/cleaning the gunk of the
ceramics?

The green icky stuff looks like verdigris.  I'd just scrub it off with
a toothbrush and warm water.  If that doesn't shift it, dilute acid
such as vinegar or lemon juice will, but rinse the ICs thoroughly
afterwards if you do that.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York 