Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!ucsd!nosc!cod!sampson
From: sampson@cod.NOSC.MIL (Charles H. Sampson)
Newsgroups: comp.sys.zenith.z100
Subject: Re: cleaning the keyboard
Summary: Is it possible?
Message-ID: <2009@cod.NOSC.MIL>
Date: 19 Jul 90 16:22:59 GMT
References: <3540@husc6.harvard.edu>
Reply-To: sampson@cod.nosc.mil.UUCP (Charles H. Sampson)
Organization: Computer Sciences Corporation
Lines: 19

In article <3540@husc6.harvard.edu> ddl@husc6.harvard.edu (Dan Lanciani) writes:

>	What's the consensus on cleaning the key contacts?  Too many
>keys are getting too unreliable and popping individual caps looks to
>be potentially destructive...  Maybe dip the whole thing :)

     I must have missed something here.  I've replaced a number of keys on
my Z-100 keyboard (we are talking about Z-100s, aren't we?), with such nasty
side-effects as breaking a trace and having to solder a jumper on the back
to fix it.  The reason for all of this is that the key units on my keyboard
are virtually sealed.  When the keys started acting up contact cleaner had
no effect.  I assumed that it was because not enough cleaner could get into
the units and what could just dribbled down the sides of the shaft and ended
up in a useless location.

     Popping the caps was no problem, by the way.  Except for the space bar,
which was a real bear to reassemble, as another respondent has already noted.

                               Charlie Sampson