Subject: Re: OT: Sticky keys
Date: Tue, 8 Oct 2002 08:02:56 +0000 (UTC)
NNTP-Posting-Date: Tue, 8 Oct 2002 08:02:56 +0000 (UTC)
User-Agent: tin/pre-1.4-19990805 ("Preacher Man") (UNIX) (Linux/2.4.19 (i686))
In sci.electronics.design Terry Pinnell wrote:
> The Control and Shift keys of my Microsoft keyboard have become
> progressively more unpleasant to use. I don't help matters as I've got
> into habit of pressing leftmost edge, rather than square centre. They
> seems to be sticking or 'catching' somehow. A small squirt of WD-40
> made no difference. Before I buy a new K/B, anyone know if you can
> pull them off to gain access from top please?
Almost certainly, but it won't help. Most keys can be pulled off from
the front, with some care.
You'll need to completely dissassemble the keyboard, and get at the matrix,
to fix it.
This is generally not particularly hard, just involving working out where
the screws are (maybe hidden under glued-on-feet, but usually not.)
Then unsnap all the plastic snappy bits, and open up the keyboard.
You'll then either find lots more plastic snappy bits, or screws, holding
the PCB/matrix to the keyboard assembly.
Remove these, and seperate out the bits.
If it's a PCB, you'll need to clean it.
If it's a matrix (several layers of plastic, with conductive tracks)
you'll also need to clean it, but you may need to cut out the points
where it's connected, to seperate it into seperate layers.
Now clean the layers of matrix, or PCB gently in warm soapy water (only
if they are contaminated)
Be carefull not to snap any connecting cables, work out how to detatch them.
Now, pop off all the keys (there may be a spring inside each one, or it
may be a layer of rubber) being carefull of the larger keys which will have
some sort of mechanism in them to keep them horizontal.
Clean everything (warm soapy water)
After you've cleaned everything, rinse well, and dry in a warm place for
http://inquisitor.i.am/ | mailto:firstname.lastname@example.org | Ian Stirling.
"An enemy will usually have three courses open to him. Of these he will
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