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Old May 25th 18, 06:27 AM posted to alt.comp.hardware.pc-homebuilt,alt.windows7.general,alt.comp.os.windows-10,alt.comp.periphs.keyboard
J. P. Gilliver (John)[_4_]
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Posts: 2,679
Default Unicomp Model-M a disaster --RESOLVED--

In message , B00ze
writes:
On 2018-05-24 22:29, Andy Burns wrote:

B00ze wrote:

I had used 100% alcohol to clean the traces on the
transparent plastic "membrane" earlier, trying to get better contact to
the controller board. This weekend, flipping the membrane over, I
discovered that I had totally removed some of the traces when I used the
alcohol; so some of the traces were "cut" and will never again make
contact with the controller board. So this keyboard is toast;


Could you use some of the silver(?) conductive paint to re-draw the traces?


Ohhh, I did not know about this. Found a "pen" of conductive paint,
ironically from MG Chemicals (the 100% Alcohol is from them.) Darn, I
have already removed a bunch of parts from the keyboard; guess I'll
have to put it all back together now.

Excellent suggestion, thanks! I will try this in maybe 2 weeks? Will
come back and let you know if it works.

Best Regards,

Don't get your hopes _too_ high: I bought some of this conductive paint
to repair the elements in my rear screen heater. It used to be widely
sold for that, but isn't now - probably because, as I found, it is very
fiddly to use and the chance of success is far from 100%. (I attempted
on two of the lines, and succeeded on one; I might try again next winter
if I find that wasn't sufficient.)
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

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