[vcf-midatlantic] PET keyboard question

william degnan billdegnan at gmail.com
Thu Nov 2 16:21:26 EDT 2017


I used the 91% with qtip on both.  I could try the eraser why not...but my
method should have worked

Bill Degnan
twitter: billdeg
vintagecomputer.net
On Nov 2, 2017 3:53 PM, "Justin Jernigan via vcf-midatlantic" <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

>
> >>I searched the web and did not find any specific best way to handle keys
> >>that have no response at all given my described situation. Most places
> say
> >>"clean everything"....OK tried that. What does one do specifically
> >>(materials and procedure) to clean the black carbon contact points to
> >>ensure conductivity? This is not the same issue as the SOL/Tandy-II
> >>keyboard problem with the dried-out pads. The PET has springs, and this
> >>particular keyboard has no rust and very little crud. There must be
> >>something microscopic like a thin film that needs to be cleared. I
> believe
> >>the pads are extending and contacting the control board. I tried using
> >>deoxit and isopropyl alcohol. Hope I did not ruin. I was able to get a
> >>few keys to work but there are a lot more to fix.
>
> I use alcohol (91%) and a qtip on both the contact points and the carbon
> pads.  Have you tried using a pencil eraser on the board contact points?
> Might be worth it on the carbon points as well (pencil eraser) and then
> clean again with alcohol.
>



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