Hi Michael, X-ray machines are great tools for setting up a process and controlling it, but they also have some serious limitations. It's hardly possible to catch opens during a routine inspection, and even if you know exactly where the opens are it may still be very difficult to find a visual deviation. And then I'm talking about a good machine with tilting capabilities and a skilled operator. Daan Terstegge Thales Communications Unclassified mail Personal Website: http://www.smtinfo.net >>> [log in to unmask] 11/13/02 02:12pm >>> We have a 316pin BGA asic that has been FIB'ed (modification of circuitry). The BGA needs to be re-set because we've determined intermittent opens. Our assembler is suggesting an xray after the re-work. Is it worth it? and I don't recall any hazards to the BGA in doing this. The archives didn't prove out for good or for ill. --------------------------------------------------- Technet Mail List provided as a free 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------