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From: george@wombat.bungi.COM (George Scolaro)
Newsgroups: comp.sys.nsc.32k
Subject: Re:  PC532 Expansion & other questions
Message-ID: <9011300806.AA15538@wombat.bungi.COM>
Date: 30 Nov 90 15:06:08 GMT
Sender: news@daver.bungi.com
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Approved: news@daver.bungi.com

[In the message entitled "Re:  PC532 Expansion & other questions" on Nov 29, 21:12, Rick Rodman writes:]
> 
> Randy:
> 
> > My board arrived.  Currently I'm pouring over the schematics before turning
> 
> Pouring over them?  By the way, would flux remover help?  I tried using
> alcohol with little success.  But the board seems to run fine anyway.
> Any recommendations?

The best product I have found (there are probably more) is made by RAWN
and the product is called FLUXSOLV, part number 11010.

It works very well. Once you have soldered everything in, keep the board at
a near vertical position, start at one corner and slowly work your way across
and down, washing the gunk towards the bottom. If you use too much pressure
(adjustable nozzle) you might spray some gunk through the vias, so use it
gently. Basically, try and keep the liquid gunk on the solder side as you
wash it off, you especially don't want it to get into the sockets. Also, it
is best to use it just after soldering, the flux is still soft, it hardens
with age and will require more flux off to remove it.

Note that modern day solders have non-corrosive fluxes so it is ok to leave
the flux on. The main reason for removing it is that you can then inspect
your solder joints much easier - flux tends to hide nasty dry joints etc.

Oh also, the FLUXSOLV likes to eat some plastics so don't use it near things
like oscilloscope front panels etc :-( also use it in a well ventilated area
- some of us have few enough brain cells left as it is...

best regards,

-- 
George Scolaro
george@wombat.bungi.com                [37 20 51 N / 122 03 07 W]