What was the blue dye used for? -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson Sent: Monday, April 28, 2008 10:03 PM To: [log in to unmask] Subject: [TN] Blue Voids Greetings! Once again I am caught in the middle of a bare board problem, (never the same thing twice!) Maybe after a few more decades of failure I might become more proficient at evaluation, but in the meantime.... Does anyone have a quick reaction to this picture? http://frontdoor.biz/PCBportal/bluevoid.jpg I'm told there are voids in the glass fiber bundles. When I reported it to the manufacturer, they asked that blue dye be applied to see the penetration. It all looks blue! (and other areas look "bluer" than the problem area to me) The description in IPC-A-600 is too brief to comprehend and I can't find anything in Printed Circuits Handbook about it. anyway, I'm not doubting anything I've been told by "the experts", my question is: How would you handle this if you saw it in YOUR report? reject? use the boards but ask for corrective action? process indicator but not really a problem? not sure, but monitor with more xsec? onward thru the fog, Jack --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 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 847-615-7100 ext.2815 -----------------------------------------------------