[Coco] Now running with 2M boomerang Memory.
rjrtty at aol.com
Sun Jun 7 19:28:00 EDT 2020
there is something else to consider. Every time you reheat a padon a circuit board it loses some of it's bond integrity. I prefer to sacrificethe chip in order to minimize board trauma.
From: Rick Ulland <rickulland1 at gmail.com>
To: coco at maltedmedia.com
Sent: Sun, Jun 7, 2020 8:01 am
Subject: Re: [Coco] Now running with 2M boomerang Memory.
Blue soldering iron with a ground plug? I built about 50 Fast232 ports
with one of those, some in my room at an actual CoCoFest. 184.108.40.206...wait
for it to warm some more.
Had the spring sucker also. I recall wiping a little brake fluid on the
inside walls to perk it up (NOT oil). After a time, that stopped working
but I found new orings at the local hardware store and that kept it
going until the tip became a nub. I also found melting a drop of new
lead solder top and bottom of each pin (sometimes a second time) helped
a ton with extraction.
OTOH, 6x09 are like $5 now, so clip the pins, save the board is probably
the best way to go until you have practiced on a few C64s :-)
On 6/6/20 6:36 PM, John E. Malmberg wrote:
> Just got done installing a 2M boomerang memory kit on a COCO-3.
> The patient seems to have survived, but I have not really tried to
> stress it. Just have had time to power it up and Super Extended Color
> Disk Basic + SDC all appear to work.
> If I were to do it over again, I would probably send the system in for
> the install.
> Lessons learned:
> * I need a better soldering iron. The 30+ year old 15W one from Radio
> Shack is on it's last tip that I have for it. It is barely good
> enough to do this type of work.
> Need to figure out what to get and where to get it, and how much it is
> going to cost.
> So looking for recommendations. This is for hobby use.
> * My two solder sucking systems did not have enough suction to save
> destroying the 68b09E chip. One is just a suction bulb on on a hollow
> tip version of the 15 watt version, that probably came from Radio
> Shack way back when. The other is the spring loaded suction from
> Radio Shack.
> Still have the chip if I can manage to solder pins back on it. :-)
> I seem to remember that the spring loaded one used to have enough
> suction to clear the pins of things I was desoldering.
> I was only able to clear the solder on about 50% of the pins with the
> two soldering suckers.
> Not sure where I got the one with the suction bulb. I do not remember
> buying it, and this may have been the first time I used it.
> Not sure if I could afford anything better, but it would be
> interesting to know the options.
> * Third problem is the the variable transition bi-focals. It is hard
> to find a position that I can really see what I am doing. I may need
> to get a pair of glasses just for doing this type of work, or some
> type of magnifying glass.
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