Sources for 8b TTL keyboards (Keytronics)

Ray Arachelian ray at
Fri Dec 5 11:30:13 CST 2008

I've used double sided foam tape + aluminum foil (yes the kind used for
food) with a bit of scotch tape over the foil to prevent shorting in
repairing Lisa keyboards.  Worked just nicely once they were cut to the
right circular shape.  Yes, the key feel was off after that, but livable.

Bill Sudbrink wrote:
> Jos Dreesen / Marian wrote:
>> The real solution would be a source of fresh foam pads....
>> I could use a few sets.
> They are <relatively> easily self manufactured.  As long as
> you aren't picky about the keyboard "feel" any foam will do.
> I use a sharpened tube that fits into my IDC crimper along
> with a small piece of wood as a punch for the mylar and foam.
> I reuse the existing rigid plastic disks... the old foam and
> adhesive easily rubs off.  It takes me about 1 minute per
> key.

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