1 bit of ASM advice needed...

[Kevin Lightner]

>> One thing that always seems to plague me, even when I plan for it, is
>> the disturbance caused by solder flux.
>
>   Gene, please explain what problems you are having due to flux
>residue!  What kind of solder/flux do you use?  We use Kester 63/37 with
>flux type "44".  Stock standard solder as far as I can tell.  In all my
>years here at my company, we have _never_ cleaned a single board and have
>never had a single board fail or behave strangely due to flux!  Practically
>every occurance of board failure that I've run across (remember we're
>moderately low tech here) can be traced down to the following problems:
>
> 1) Wrong components installed
> 2) Bad solder joints (specifically cold solder joints)
> 3) Broken or shorted traces (manufacturer's defects)
> 4) Faulty components
>
>   Most synth circuits that I've seen aren't so sensitive that a
>stable non-conductive flux is going to cause to majorly fail as was
>described earlier.  Granted, I don't know what kind of solder was being
>used so it's hard for me to imagine what the real culprit is.  So I'd
>certainly like to hear from various DIY'ers to see what kinds of
>solder/flux is being used.  Then I'll know what to stay away from...


Well I've had problems in some S/H circuits, but that's a sort of obvious
place not to have flux, fingerprints, etc.  :)

KL