[Coco] IT"S ALIVE!!!

[Mark Marlette]

That goes under my dirty contacts sentence.




________________________________
 From: Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Thursday, September 12, 2013 9:52 AM
Subject: Re: [Coco] IT"S ALIVE!!!
 

what about oxidation on a 30 year old pin chip ?


On Thu, Sep 12, 2013 at 10:43 AM, Mark Marlette
<mmarlette at frontiernet.net>wrote:

> As I am sure this is all possible, I have never seen this happen on a
> properly extracted/handled chip.
>
> Not to say that you guys didn't properly extract/handle, you could have
> and it was damaged prior.
>
> These are J leaded components. You have to apply force away from the pin
> to get it to move as it is wrapped under the body.
>
> Taking a GIME out without the proper tool, cant be done properly, period.
>
> Not preaching, have done over 1000 CoCos easily. This is VERY rare to have
> a GIME fail, in any manner. Dirty contacts, common as heck.
>
> That is why they call them statistics though...it is bound to happen. :)
>
> Regards,
>
> Mark
> http://wwww.cloud9tech.com
>
>
>
>
> ________________________________
>  From: Robert Gault <robert.gault at att.net>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Thursday, September 12, 2013 8:20 AM
> Subject: Re: [Coco] IT"S ALIVE!!!
>
>
> Bill Pierce wrote:
> >
> > Wow.... It finally came back to life!
> > ... I noticed the rom chip on the keyboard interface was a little dusty
> so I decided to clean it while I had the computer open. I took out the chip
> (carefully) and proceeded to clean it with some alcohol and qtip when the
> bottom half of one of the pins fell off.
> > ....
>
> Great story and not that unusual I'd bet. The same thing happened to me
> with a
> GIME chip.
>
> In order to test software that gave the Coco3 a "run for its money", I
> would
> exchange the two GIME chip versions to see how the GIME chips differed.
> This was
> with regards the search for the "256 color mode". I did this once too
> often and
> broke a pin off the newer GIME as it came out of the plastic.
>
> Luckily there was still a small amount of metal visible which I could
> expose
> further by scraping away some plastic with a knife blade. With the GIME
> inserted
> in the socket, I placed a short piece of copper wire into that portion of
> the
> socket so that it made contact with both the socket and residual pin.
> The Coco3 worked perfectly!
>
> Robert
>
>
>
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