Dave,
If you don't reflow the board and you have no BGAs - leave as is. Otherwise
- look at plugging the holes from the CS. Indeed, this is the wrong side for
doing this, but after all, you want both to eat the cake and leave it
complete - avoid soldering problems and leave the test points clear for the
test instrument contacts.

Regards
Ofer Cohen
Quality Assurance Manager
Seabridge Ltd.


-----Original Message-----
From: Dave Chapman [mailto:[log in to unmask]]
Sent: Tuesday, April 15, 2003 13:09
To: [log in to unmask]
Subject: Re: [TN] Neither a question, or a response...


I do have a question and would like a response offline please. I have 2000
vias on the bottomside of a wave soldered board and vias (not all) will be
used by test. Problem is operators spend way too long inspecting to see the
vias are filled by the wave. I want to  fill the vias with conductive epoxy,
Methode or Dupont material. I hear it is done but can find none of our
board houses who have ever done it. Is this a fantasy? A good theory no one
is doing? Why not? I got a response that it is "very very expensive" what
does that mean? $1 a board more $10 a board more? And yes I have searched
the archives. This is a high volume job I may be able to eliminate 3 shifts
worth of inspection vs. whatever the increased board cost is.

Thank you. I promise to post results to Steve's website complete with
pictures whether it works or not.
Dave Chapman
Manufacturing Engineer
Circuit Service Inc.


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