[Coco] I've killed my CoCo3

[Roy Justus]

Hello  Paul
    Every time you heat and cool a pad or trace it
lowers the integrity of the pad.   This is why I socket
everything I have to replace.   This way
it doesn't need to be done again and minimizes
board trama

 

 

Roy Justus
rjrtty at aol.com

 

 

-----Original Message-----
From: Paul Shoemaker <paulfe3 at swbell.net>
To: coco <coco at maltedmedia.com>
Sent: Thu, Oct 19, 2017 4:23 am
Subject: [Coco] I've killed my CoCo3

Hi everyone,Yesterday evening I decided to replace the 6809 with a 6309 in my CoCo 3.  Although I am still an amateur with a soldering iron, I've been practicing and recently completed this same process on one of my CoCo 2 systems where I clipped out the 6809, desoldered the remaining pins, and soldered in a socket.  However, when I tried this same approach on my CoCo 3, as soon as I started using solder wick, I noticed some of the solder pads began to come off.  I don't think I was using excessive heat (same iron, same heat settings as before).  Even the traces on the board began to lift up.  It became clear to me after this happened to a few pads that I had destroyed the board.If anything I was more gentle with the CoCo 3 board than I was with the CoCo 2 board before.  It was evident that the CoCo3 board was more "weathered" than any of my other systems...  more dust and dirt inside, a lot of oxidation on the RF modulator box, etc.  It may be that this CoCo 3 spent many years in a garage or shed prior to me rescuing it from eBay last year.Any advice on how to avoid from happening again this in the future?  -Paul-- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco