[vcf-midatlantic] Tandy 6000HD lives!

Mike Loewen mloewen at cpumagic.scol.pa.us
Sun Mar 17 22:28:31 EDT 2019

On Sun, 17 Mar 2019, Jonathan Gevaryahu via vcf-midatlantic wrote:

> On 3/17/2019 8:59 PM, Mike Loewen via vcf-midatlantic wrote:
>>  On Sat, 16 Mar 2019, Jonathan Gevaryahu via vcf-midatlantic wrote:
>>>  On 3/16/2019 1:22 PM, David Gesswein via vcf-midatlantic wrote:
>>>>   On Fri, Mar 15, 2019 at 01:06:10AM -0400, Mike Loewen via
>>>>  vcf-midatlantic
>>>>   wrote:
>>>>>   The foil-and-foam Keytronics keyboard required a complete rebuild
>>>>>   (disintegrating foam), and a Sun Type 4 keyboard was sacrificed to
>>>>>   provide replacement pads.
>>>>   I have done the same steal pads to fix another keyboard since I didn't
>>>>   have the time to make them myself. If you hadn't heard about them this
>>>>   place sells ready to go pads. I bought a set to fix the donor but
>>>>  haven't
>>>>   tried them yet.
>>>>   https://texelec.com/product/foam-capacitive-pads-keytronic/
>>>>   .
>>>  Has anyone figured out a material which can be used to replace the
>>>  original aluminized(?) paper discs from keytronic keyboards? The foam I
>>>  know (vaguely) what type it originally was.
>>>  I have four of them here (one kb3270 and three victor 9000 keyboards)
>>>  where the foam has turned to goo and corroded away most of the metal on
>>>  the discs, so I don't think they can be re-used.
>>     Several people (me included) have used a "space blanket" from WalMart
>>  as the mylar layer.  You have to make sure that the conductive side is
>>  attached to the foam.
>>     For whatever reason, the latest batch of pads I made didn't work (only
>>  about 10% success rate) on the Tandy 6000 keyboard.
> I'm not sure the original paper discs had any mylar on them at all, but I'm 
> not certain. I've never for certain figured out what they were made of. Maybe 
> some ex-keytronic employee knows...

    See this thread:


Mike Loewen				mloewen at cpumagic.scol.pa.us
Old Technology				http://q7.neurotica.com/Oldtech/

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