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September 2004

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Subject:
From:
"Whittaker, Dewey (AZ75)" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Whittaker, Dewey (AZ75)
Date:
Thu, 9 Sep 2004 08:18:00 -0700
Content-Type:
text/plain
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text/plain (91 lines)
It comes from better living through chemistry and riding a Black Shadow
Vincent.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Douglas O. Pauls
Sent: Thursday, September 09, 2004 8:08 AM
To: [log in to unmask]
Subject: Re: [TN] PWB Conductive Contamination Under Solder Mask; What
Can Cause it?


Bill,
You must have a heck of an arm to be able to bang our dendrites from UNDER
solder mask.  Must be in the wrist somehow.

Doug Pauls




                      [log in to unmask]
                      Sent by: TechNet         To:       [log in to unmask]
                      <[log in to unmask]>        cc:
                                               Subject:  Re: [TN] PWB
Conductive Contamination Under Solder Mask; What Can
                                                Cause it?
                      09/09/2004 09:57
                      AM
                      Please respond to
                      TechNet E-Mail
                      Forum; Please
                      respond to
                      Wgkenyon2






Try banging a failed completed assembly on the benchtop several times
(works
better without the mask/coating), then test it. Dendrites are brittle and
break during this mild abuse. Should be able to get the PWA to work again
if
dendrites are your problem.

Bill Kenyon
Global Centre Consulting
3336 Birmingham Drive
Fort Collins, CO   80526
Tel: 970.207.9586   New Cell: 970.980.6373

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