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Path: utzoo!utcsrgv!info-mac
From: info-mac@utcsrgv.UUCP (info-mac)
Newsgroups: ont.micro.mac
Subject: Changing RAM ICs
Message-ID: <4900@utcsrgv.UUCP>
Date: Fri, 13-Jul-84 04:13:54 EDT
Article-I.D.: utcsrgv.4900
Posted: Fri Jul 13 04:13:54 1984
Date-Received: Fri, 13-Jul-84 05:23:13 EDT
Sender: peterr@utcsrgv.UUCP
Organization: CSRI, University of Toronto
Lines: 24

Date:     11 Jul 84 14:08:20-CDT (Wed)
From: Eric Roskos <uw-beaver!jer%vanderbilt.csnet@csnet-relay.arpa>
To: info-mac@sumex-aim.arpa
Subject:  Changing RAM ICs

Recently there has been some discussion on changing the RAM chips on
the Mac.  At the risk of redundancy, I have two questions:

1) Has it actually been determined that you can replace the existing
RAMs with new ones (256K I guess) to increase the memory size?  The
last I had heard on here, there was some question as to whether that
was all that needed to be done.

2) It puzzles me that no one has suggested using a desoldering pump to
remove the RAMs... I have often used a desoldering pump to extract
ICs on our large multilayer circuit boards in our ``mainframe'' machines
here, with no problems and no damage either to the circuit board or the
chips.  The desoldering pumps cost around $12, compared to the cost
of cutting out the RAMs...

					-- J. Eric Roskos
					   jer@vanderbilt