[Coco] Gold Plating the Tin Card Edge Fingers of Old Coco Paks, MPIs, etc.

[Gene Heskett]

On Saturday 13 April 2013 22:13:01 George Ramsower did opine:

> Kip,
> 
>  What I have done in the WAY past is cut a gold plated edge connector
> off of a PC ckt board and soldered a short ribbon cable between it and
> the original together, after cutting the original connector somewhat
> shorter. This gives felexability and a new, gold plated edge connector
> onto that device. It isn't easy to plug it into a Coco connector, but
> it is doable. Re-tinning the old edge connectors is possible if all the
> original copper is in place, enough to solder to.  I'ts a pain in the
> petuty but, doable. Clean and polish the old edge connector very well
> or the solder won't stick.
> 
> George

Another way to do it, but be aware that much of the ground connection 
between the coco and the MPI is in the ears sticking out of the mpi on each 
side of the connector finger pattern, and which slide into the clips on 
edge side of the coco's socket, and without that solid ground, you have 
only one conductor in the ribbon cable connecting the two grounds together.  
For that reason alone, I'd prefer the way I did it by soldering the edge 
pattern from an old gold plated pc card to the mpi after sawing off a bit 
of the original fingers.

>   ----- Original Message -----
>   From: Kip Koon
>   To: Coco Email List
>   Sent: Saturday, April 13, 2013 7:48 PM
>   Subject: [Coco] Gold Plating the Tin Card Edge Fingers of Old Coco
> Paks, MPIs,etc.
> 
> 
>   Hi Everyone,
> 
>   I'm having great difficulty keeping my Coco 3 compatible MPI
> operational. It worked fine yesterday.  I disassembled my Coco 3 setup
> to test some other cocos and when I set my Coco 3 setup back up with
> the Coco 3 MPI later on, it was a no go.  The Coco 3 will not boot up,
> even with no paks plugged into the MPI.  It'd just the Coco 3 and an
> empty MPI.  I looked at the card edge contacts and they are awful!
> Yuck!  No wonder it isn't working!  How do I revive those card edge
> fingers plated with tin.  It is possible to have them gold plated
> somehow without completely removing everything from the PCB? Any ideas
> would be greatly appreciated.  Thanks in advance.
> 
>   Kip
> 
> 
> 
> 
>   --
>   Coco mailing list
>   Coco at maltedmedia.com
>   http://five.pairlist.net/mailman/listinfo/coco
> 
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco


Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: <http://coyoteden.dyndns-free.com:85/gene> is up!
My views 
<http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml>
 All generalisations are dangerous, including this one.
A pen in the hand of this president is far more
dangerous than a gun in the hands of 200 million
          law-abiding citizens.