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From: vomlehn@ut-ngp.ARPA
Newsgroups: net.micro.cpm
Subject: Using cold-in-a-can products to isolate faults
Message-ID: <17315@sri-arpa.UUCP>
Date: Thu, 8-Mar-84 15:20:37 EST
Article-I.D.: sri-arpa.17315
Posted: Thu Mar  8 15:20:37 1984
Date-Received: Sun, 11-Mar-84 01:28:51 EST
Lines: 8

You should be careful when using one of those cold-in-a-can products
to isolate heat-sensitive chips.  Apparently someone took a look at
these things and discovered that suddenly cooling down a hot chip can
cause it to fail.  This is not entirely suprising when you consider what
happens when you put a hot glass jar into cold water; it cracks.  I
don't know if this person came up with actual figures for these cold-
induced failures, but if you notice your board fails in a different way
after cooling down a chip it may be that you now have TWO defective chips.