[Coco] IT"S ALIVE!!!

[Bill Pierce]

Mark, mine wasn't the GIMI but the rom to the Eagle AT keyboard interface which is the same size as the roms in your old AT keyboard interfaces.This Coco hadn't been tinkered with in 15 years until I got it last year. The pins were slightly corroded and came out one ended and slightly bent the pins. I was using a pair of needle nose pliers to flatten the pin back when it broke. I don't work on computer components every day, so there's a lot of tools I don't have. A chip puller is one of them I haven't picked up.
 I was just amazed that the guitar string worked :-)

Bill Pierce
My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
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E-Mail: ooogalapasooo at aol.com




-----Original Message-----
From: Mark Marlette <mmarlette at frontiernet.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Thu, Sep 12, 2013 10:45 am
Subject: Re: [Coco] IT"S ALIVE!!!


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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