Kaypro II keyboard fault / keyswitches wanted

Randy Dawson rdawson16 at hotmail.com
Wed Apr 18 20:55:05 CDT 2018

Here you go:



Victor 9000 / SIRIUS 1 Keyboard repair, Foam Pads for KeyTronic Keyboards | eBay<https://www.ebay.com/itm/Victor-9000-SIRIUS-1-Keyboard-repair-Foam-Pads-for-KeyTronic-Keyboards/121266887970?hash=item1c3c11dd22:g:HRYAAOSw91NTtPPK>
Besteht aus einem Schaumstoff Pad, dass nun nach rund dreißig Jahren sein Lebensende erreicht hat. Der Schaumstoff. Die Pads bestehen aus einem doppelseitig mit Klebefolie ausgestatteten Schaumstoff. | eBay!

You still have to add the Mylar foil to them.  I cut up some dollar store silver balloons.

From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Jim Brain via cctalk <cctalk at classiccmp.org>
Sent: Wednesday, April 18, 2018 4:02 PM
To: cctalk at classiccmp.org
Subject: Re: Kaypro II keyboard fault / keyswitches wanted

On 4/18/2018 6:01 PM, Jules Richardson via cctalk wrote:
> Hey all,
> I snagged a Kaypro II a short while ago which I finally got around to
> looking at. After some minor TLC to the drives, it's booting.
> However, the keyboard appears unresponsive. Pressing keys (with the
> exception of caps-lock, the two shifts, and ctrl) results in a
> buzz/click from within the keyboard - if I'm interpreting the
> schematics right, the click is actually driven by the system in
> response to a keypress, which suggests that my keyswitches are OK (I
> believe these use a foam disc approach, which are prone to
> deterioration) and that keyboard data is being received OK (at least
> on some low level).
> Any suggestions for possible things to investigate? It doesn't feel
> like a memory fault, given that it's using 64kx1 ICs and booting as
> far as a prompt, but I suppose it's possible.
> On the back of this, I'm in need of three keyswitches, if anyone
> happens to have a parts machine and would be willing to sell any. A
> student of the machine's previous owner dropped the keyboard years ago
> and broke three of the keys off. I have the keycaps, but the switch
> stems are broken and it would probably be easier to replace the entire
> stem portions rather than attempting to glue things back together.
> cheers
> Jules

Can't help on the diag, but wanted to stay tuned in if keyswitches are
available.  Been hunting for a few for a few years.


Jim Brain
brain at jbrain.com
The Brain Trust - Things Worth Mentioning<http://www.jbrain.com/>
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