The bad board had beans for lunch, "bad out gassing problem"! :-) KennyB -----Original Message----- From: Inge [mailto:[log in to unmask]] Sent: Monday, August 24, 2009 1:50 PM To: [log in to unmask] Subject: Re: [TN] Manual spraying, further qs This very day, I couldn't stay aside but had to do something to help the production guys. So, I took a fresh, naked and qualified board from another source and did this: Put one of our problem boards beside the reference board, both on bottom of a larg well box, i.e. no fans blowing, nor any evacuation. Sprayed both simultaneosly. Inspected them after one hour at room temp. The reference board was absolutely perfect, while the other was matte! Had a look in a microscope. The bad guy had thousands of microscopic inclusions and even superficial voids, the reference was perfect. Noticed that the bad boards have a much coarser (looks like the net pattern after screen printing)green sheet (solder mask) and numerous voids already before spraying. What is your opinion? /Inge --------------------------------------------------- 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 -----------------------------------------------------