[Coco] CoCo repair-upgrade

Mark Ormond markormond at mtxsystems.com
Tue Sep 27 09:31:34 EDT 2011

I find the using the smt rework station to preheat the board, and then using the solder sucker plus a iron gives me good results.

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On Behalf Of Mark McDougall
Sent: Tuesday, September 27, 2011 8:10 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] CoCo repair-upgrade

On 27/09/2011 8:26 AM, Chad H wrote:

> Actually, that's EXACTLY what I used...I tried desoldering braid
> first...mixed results.  Tried vacuum desoldering bulb., only seems to
> work if hit the part real quick before it cools.

I use a $5 spring-loaded desoldering 'pump' myself. With a bit of practice, 
just as good as any fancy-schmancy desoldering tool. The trick is to use 
*enough* solder; some people seem to think that because you're trying to 
remove the solder, starting with less is better. But the exact opposite is 
true - generally you need to *add* solder before you start.

I'm about to attack an Acorn A3000 with a half-dozen 32-40 pin sockets that 
need removing. Not looking forward to it, but just got an SMT rework station 
so may try to put that to work on it...


|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"

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