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April 1997

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Fri, 18 Apr 1997 23:39:39 -0700
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First I appreciate the information I  received from my previous post.

I need some help  for solder finish of PCB. Why do they look dull and
hazel sometime  ( not uniform and shinny). Manufacture checks the solder
pot and everything ,including copper content, is within range. What I see
there is quite heavy flux floating on the top of the solder and solder
flow is quite slow ( flux is OA type).

What will be the best way for Manufacture controlling  the solderability
without damaging boards. Now only visual check and wait for complaining.

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