SUMMARY: Fixing Sun keyboards

From: Scott Runnels (runnels@cfdlab.ae.utexas.edu)
Date: Tue Jan 07 1992 - 18:21:32 CST


Regarding the repair of Sun console keyboards which have keys that
do not work, the following types of helpful suggestions were
provided:

  1.) Cleaning under the keys with compressed air blown in
        from above the keyboard.
  2.) Removing the back of the keyboard and cleaning the contacts
        with a solvent (isopropyl alchohol, distilled water,
        electronic parts cleaner) or even with more compressed
        air.
  3.) Trying the above cleaning by just prying off the keycap with
        a pocket knife, or preferably, two bent paper clips.
  4.) Closer inspection might reveal broken leads to the key. If so,
        these can be found with a magnifying glass and/or ohmeter.
        The leads can then be re-soldered together.
  5.) In some cases, there is a hardware problem with the key. This
        can be the "plunger" or a small plastic U shaped part which
        can break or come loose. Inspect working keys by removing the
        key cap as described above. Then repair the broken key by
        comparing to a working key and, if necessary, swapping out
        the plastic U part with a less needed key.

Most responses say that their method almost always works. Thanks to
all who responded:

  bukys@cs.rochester.edu
 'Robert (Fletcher) Williams' <spaceman@mwunix.mitre.org>
 geertj@ica.philips.nl (Geert Jan de Groot)
 wolfgang%sunspot.nosc.mil@nosc.mil
 Probert <probert%cs@hub.ucsb.edu>
 David Fetrow <fetrow@orac.biostat.washington.edu>
 tpriddy@homrun.intel.com (Tim Priddy )
 Robert Haddick <rhaddick@us.oracle.com>
 ralph@swmerc.rain.com (Ralph Merwin)
 fpb@ittc.wec.com (Frank P. Bresz)
 Eble@RUF.Uni-Freiburg.DE (Axel Eble)
 sls@cs.duke.edu (Shelley L. Shostak)
 aimla!ruby!jennine@uunet.UU.NET (Jennine Townsend)
 clive@jtsv16.jts.com (Clive Beddall )
 dwm@fibercom.com (Dave Minnich)
 debra@acc.com (Debra Tivetsky)

        
  

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Scott R. Runnels (runnels@cfdlab.ae.utexas.edu)

Computational Fluid Dynamics Lab Dept. of Aerospace Engr. & Engr. Mechanics The University of Texas at Austin Austin, TX 78712 (512) 471-4069

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