Charles:
 If electrical testing is required and paid for, all the boards should have
been netlist tested or they could have netlist tested the golden board and
used this golden board to test the remaining batch on a bed of nails tester.
But in either case all the boards should have been tested and one with any
opens either fixed and retested or crossed out.

Sona
Fineline Circuits Inc.

----- Original Message -----
From: "Charles Caswell" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, May 19, 2003 1:23 PM
Subject: Re: [TN] PCB_OPEN_VIAS_PROBLEMS


In our case I have been told that the netlist testing is only done on one
out of the lot.
Charles

-----Original Message-----
From: Fineline Circuits, Inc. [mailto:[log in to unmask]]
Sent: Monday, May 19, 2003 4:26 PM
To: [log in to unmask]
Subject: Re: [TN] PCB_OPEN_VIAS_PROBLEMS


Wesley:
Weren't these boards tested by your board supplier? Electrical testing
should have failed the boards with the open vias . The vias may have voids
due to bad drilling and deburring which may clog the hole, poor smear
removal or malfunction of the electroless copper line-trapped air or could
be plating voids. Cross section of the open vias should pinpoint the
problem.

Sona
Fineline Circuits Inc.

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