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From: a143@mindlink.UUCP (Ed Meyer)
Newsgroups: sci.electronics
Subject: Re: plated thru holes
Message-ID: <1961@mindlink.UUCP>
Date: 30 May 90 19:47:37 GMT
Organization: MIND LINK! - British Columbia, Canada
Lines: 12

Replying to a message by Greg Ebert (Grass Valley Group), I thought I'd mention
something which happened to me.  While diagnosing a computer board fault
(ruggedized board for environmental data acquisition) I came to the conclusion
that one or more plated through holes in one section must not have been plated
through.  Well, careful conductivity checking verified my suspicions.  But then
came the surprise -- I'd heard about this kind of thing before but never
experienced it myself until that time -- the holes were falling out!  One inner
wall cylinder was just in its hole and several of the other tiny cylinders were
at the bottom of the case, no kidding.

So, even though the board shop was making plated through holes, {_a quality
problem existed which didn't show up till much later.