Tony

I venture to suggest that what you have been doing is not cleaning but
rather a re-distribution of the contaminants over a wider area.

If you have to clean, then use a machine ....poetry, pure poetry!

Otherwise I would recommend using a no-clean that you can leave on safely
without cleaning - is there such a thing? I am not sure but it does depend
upon the operating conditions your assembly is working under.

Regards, Graham Naisbitt

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> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Tony Conlon
> Sent: Wednesday, June 13, 2001 02:36
> To: [log in to unmask]
> Subject: [TN] A solution to white residues after smt rework ...
>
>
> We're using:
>    Kester #186 Flux Pen
>    Microcares Vericlean (applied from aerosol can thru a hand-held brush)
>
> All our material is surface mount, no bga's,
> We run a no-clean process ...
>
> Problem: We clean after repair/rework for cosmetic reasons ... the cleaner
> we are using leaves a trace amount of white residue behind ...
>
> I have also tried Multicores Mini-Fluxers & Mini-Cleaner ... less residue
> ... non-consistant ... not 100% satisfied.
>
> Does anyone have a tried and trusted system?
> Regards,
> Tony.
>
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