[Coco] IT"S ALIVE!!!

[Bob Devries]

Hi Mark,

while I agree with you regarding the chip removal, I once had to repair a 
faulty Coco3 which still had its warranty sticker intact. The GIME chip had 
one leg bent up and it was making intermittent contact with the socket. 
Removing the GIME with an extractor tool still broke the pin. I manufactured 
a pin and soldered it to what was left of the original. It worked fine after 
that.

When the Coco3 first came to Australia, I encountered several where the GIME 
chip had popped out of its socket. Tandy supplied a steel clip which would 
hold the chip in place and stop this problem.

Regards, Bob Devries
Dalby, QLD, Australia

----- Original Message ----- 
From: "Mark Marlette" <mmarlette at frontiernet.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, September 13, 2013 12:43 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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