suggestion...(not too pretty)

dump the lot AND dump the supplier

this type of defect is chronic to the process, you do not want to deal with
a supplier who can not control this.

wolfgang

----- Original Message -----
From: "Eric Stellrecht" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, December 15, 2003 2:10 PM
Subject: [TN] Problem With PCB Opens


> Technet Members,
>      We have identified a field return trend in a line of circuit boards.
The problem is occurs which a trace separates from the plated through hole
> causing an open circuit.  Unfortunatly, we had to destructively analyze
two boards to reach this solution.  The failure analysis points to a
> manufacturing defect that will potentially affect an entire lot of boards.
We are looking for a non-destructive way to analyze this lot of boards to
> determine whether or not a particular board suffers from a partially or
intermittant open condition, on its way to becoming a hard open.  Any
> recommendations would be greatly appreciated.  Thanks in advance...
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 1.8e
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
> -----------------------------------------------------
>
>

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------