TechNetters, about 2 years ago, this company had a discussion with a 
customer who found 2 or 3 non-functional boards out of a batch of 
approximately 100.  The electrical test at that time was not structured 
to check a few of the nets on the boards, and, sure enough, some 
escaped.  The customer was eager to have the test improved and corrective 
action taken.  About 1 month later, the customer returned with another 
question:  How much money would we save if no electrical testing were done?

I would suggest fabricators and users agree on acceptable quality levels 
for bare boards before any contracts are made.  I agree OEMs should not 
have to test, either at the bare or assembled stage, quality into circuit 
boards.

Lou Hart
Compunetics Quality Assurance


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