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February 2001

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 7 Feb 2001 17:30:52 EST
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Hey All!

Wave soldered three boards today, all the same assembly, same profile, etc.,
and after wash one board looked all milky white on the bottom, they all
looked the same coming out of wave though...when comparing it to the other 2,
it was like Ebony and Ivory...go to:

http://www.driveway.com/share?sid=4eced0a4.94f42&name=Pictures&view=3

And you see what I mean. I've got a close-up on Ivory too. Mask seems intact,
and everthing else seems okay except for the milky color... the "Ebony" looks
like it almost was going to do the same thing, because you can see the
outline of the wave solder fixture in it, but it didn't. On "Ivory" you can't
miss the fixture outline...what in the bajeebers would cause something like
this? Is the board scap? It's class-2.

I tried baking to see if would do anything but it didn't...

Thanks!

-Steve-

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