I've always considered long term burn in to be a patch for a quality problem that has no other solution. Ideally, the failures that result from a burn in should be carefully analyzed, then corrective action steps taken to fix them, and not rely on BI to provide a "fix" to component, or process defects. I think experience would show that the more a product is handled, the more damage is induced as a result. Best of luck on your problem... /John --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d 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 delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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 ---------------------------------------------------------------------------------