Dan, This is not an answer to your repair question, but an inquiry of my own. We are about to assemble some boards using TBGA's and was wondering if these packages require pre-baking as do PQFP's to remove moisture. In reading about TBGA technology, I find no mention of pre-baking or moisture sensitivity ratings. Please advise. Thank you in advance, [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: TBGA's on "big boards" Author: [log in to unmask] at INTERNET Date: 4/17/97 11:21 AM we are currently building some 18" by 20" product with up to 4 500+ I/O TBGA's......The production process is ok....but we have some difficulty during repair....Preheat profile control is a critical parameter...does anyone have experience with TBGA repair on big boards? What repair platform should I investigate? thanks dan *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************