Flux removal question

[Paul Wilkinson]

Here's another flux removal question - How do you do it?  Do you just spray
it on and let it dry, or do you have to get in there with a Q-Tip?  And do
you need to do it soon after soldering?

My flux remover came with a billion warnings all over the can AND another
sheet of warnings attached with a rubber band - but no instructions!

- Paul

------Original Message------
From: Harry Bissell <harrybissell at prodigy.net>
To: Blandon Ray <arp2813 at home.com>
Sent: June 18, 2000 3:54:03 AM GMT
Subject: Re: Flux removal question


You seem to be right on target. I would avoid flux cleaner on
1) Polystyrene caps
2) Pots and Switches (it will remove lubricants etc...)
3) Jacks  (could leave a residue...)

I washed my PCB before installing these components.

Flux leakage can be a problem around high impedance areas like the VCOs,
S/H etc.  I usually try to scratch the flux away with an x-acto knife (gets
brittle
after about a day, flakes off easy) then clean with a swab.

Your caps might be OK and they might be toast. Can't tell if they are
damaged
until you fire it up. I'd try first...they might be fine.

H^) harry

Blandon Ray wrote:

> Actually a few questions, especially for those of you building the Mini
Modular:
>
> After last night's round of soldering I sprayed the back of the board with
some
> flux remover. When it dried, some of the clear plastic polystyrene
capacitors had
> turned white on the outside. My questions are: first, is this likely to
damage the
> caps themselves? Second, what else shouldn't I spray with flux remover?
Finally,
> how important is it (generally speaking) to remove flux from analogue
circuits?
> I'm told it can cause problems related to current leaking around the
board, but
> that's about all I know.
>
> Thanks in advance,
> blandon

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