[GreenKeys] Complete Solder-Desolder Rework Station on eBay!

Sat Aug 31 23:39:15 EDT 2013

we have a microscope and the xy table and all that stuff... but need to get 
 the  good soldering stuff  to match up with it.

We have extra microscopes and microscope heads  we  trade off  from  time 
to  time  for  other  things   we  need for  the museum.  aside from  some of 
the usual  inspection stuff we will have a surplus hi power metallurgical 
microscope  available also. If you really wanted to carry this one further  
you can use  it  for  analysis of metal fatigue in teletype parts!

we always  like examples of scopes that are:

extremely ancient!

or  for a unique application

or  just  look  unique!

so anyway  if  you eve  need a scope let us know.
\\

Ed Sharpe Archivist  for SMECC

In a message dated 8/31/2013 7:54:37 P.M. Mountain Standard Time,  
gil at baudot.net writes:

Hey Don:

I get my solder equipment from Circuit Specialists, who just happens to  be 
not too many miles from here.  Their solder gear is made in China, of  
course, but has proven to be good-quality, everyday-use stuff for  me.

I have a station similar to that ebay unit, which may or may not be made  
by the same folks (as I think the Chinese even rip off other Chinese):
http://www.circuitspecialists.com/csi825a.html

This hot-air station works quite well.  The included round nozzles  are 
really of no use, but Circuit Specialists has a wide selection of extra  
nozzles, so I picked up some rectangular/square nozzles for various sizes of  
soic, tqfp, and other packages I use.  I don't use their wire removal  gizmo -- 
I just put the tip of an xacto under the part, apply a SMALL amount  of 
torque, and heat the chip with the air.  Put too much lifting torque  on the 
device, and you may lift pads as well.  After the part is off, a  solderwick 
cleanup preps the pads for the replacement part.  Apply some  solderpaste (it 
is cheap on _dx.com_ (http://dx.com/) ) -- does not need to be precise and 
can  splatter across pads ( a syringe or even a toothpick is fine).  There is 
 a vacuum pickup gizmo for placement on my rework station, but I use a 
4-dollar  eye-dropper-like-smt-placement gizmo from ebay which is just fine.  
After  placing the replacement part, the hot-air gun will reflow the paste  
nicely.  Shorts between pins happen if the paste is too thick, but  usually it 
all sucks onto pads during reflow.  I try to keep the paste  near the ends 
of the pins (and not under the chip body) so it is easier to  wick off 
shorts.  A tip:  If you get a short underneath and it won't  wick out easily 
(don't get things too hot!), then just use an iron and add  more solder first, 
and wick off the larger blob.

For through-hole rework, I have another unit from Circuit Specialists  with 
a vacuum desolder gun:
http://www.circuitspecialists.com/csi701a.html

This has been invaluable for many years, most recently for when I  
re-capped my Tek 2445 scope power supply.  I got the 2445 (100 MHz) scope  cheap on 
ebay, as a backup to my primary 2465 (300MHz) scope, which has been a  joy 
to use daily for over a decade.  I started testing the 2445, and  after 10 
minutes smoke was pouring out the fan outlet.  After wishing I  had just 
gotten a new rigol or siglent or owon, I opened up the 2445 to find a  blown film 
cap in the 115V line filter.  Being optimistic that no further  damage had 
been done, I looked into it and found many folks with info on  replacing 
both film and electrolytic caps in these scopes to add another 2  decades of 
life.  So I got the parts (x2 for both scopes), re-capped the  2445, and was 
very pleased when it came back to life.  After a bit of  time on the 2445, I 
plan to re-cap the 2465 as well.  Some day I'll pick  up a newer DSO, but 
they need to mature a bit -- the rigol units (which is the  oem to agilent for 
the entry level) has too small of a memory for the price,  the owons have 
great specs but need to refine their UI, and the siglents (who  oem to 
lecroy) look pretty good, but in a couple of years they will all be  better for 
less money.

Ahh, quite off-topic now.

gil

gil smith
greenkeys moderator
_gil at baudot.net_ (mailto:gil at baudot.net) 

-------- Original Message --------
Subject:  [GreenKeys] Complete Solder-Desolder Rework Station on eBay!
From: Don  Robert House <_62.5milliamps at gmail.com_ 
(mailto:62.5milliamps at gmail.com) >
Date:  Sat, August 31, 2013 9:55 am
To: _greenkeys at mailman.qth.net_ (mailto:greenkeys at mailman.qth.net) 

I  found this on eBay and thought you might like it!

Check it out: 852D+  Soldering Rework Station Hot Air & Iron Gun 
Welder Desoldering PLCC  SMD http://r.ebay.com/8hZtVm

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