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January 1999

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TechNet <[log in to unmask]>
Subject:
PCB defect
From:
"<Ashok Tiwari>" <[log in to unmask]>
Date:
Tue, 26 Jan 1999 15:34:02 -0800
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"TechNet E-Mail Forum." <[log in to unmask]>, [log in to unmask]
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text/plain (21 lines) 
Hi Technetters!
I have received one assembled PCB from production floor which has developed
black color spots all over it like chickenpox. Though these dots are under
solder masking but it is visible by naked eyes. Can anybody tell about this
defect & how to remove?
Thanks in advance.
Ashok Tiwari
Solectron CA

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