I haven't woke-up yet, strike that last question. You said you already recieved the boards... so you would know if you got new ones or not. Kind regards, -Steve Gregory- Senior Process Engineer LaBarge Incorporated Tulsa, Oklahoma (918) 459-2285 (918) 459-2350 FAX Stephen R Gregory/LABARGE@L To: [log in to unmask]@SMTP@Exchange ABARGE cc: (bcc: Stephen R Gregory/LABARGE) Sent by: TechNet Subject: Re: [TN] Rework for Delaminated PWBs <[log in to unmask]> 09/16/2005 06:16 AM Please respond to TechNet E-Mail Forum <[log in to unmask]> ; Please respond to Stephen R Gregory Mornin' Everybody! I have the pictures that Mumtaz sent me posted now. Go to: http://www.stevezeva.homestead.com and click on "Picture Page 2" and look at; "Blister 1, Blister 2, After Bake 1, and After Bake 2". Boy, that's some SERIOUS delamination! I don't know enough to say if the rework that your supplier is proposing is acceptable, but my first question would be is why would they send you boards that are not cured? If they sent you boards that are that undercured, what else is wrong with these boards? I would have a very hard time accepting these boards. Which brings up another question, if you say you won't accept them and that you want new boards, how will you know that you won't get the same boards that your supplier has "reworked"? Kind regards, -Steve Gregory- Senior Process Engineer LaBarge Incorporated Tulsa, Oklahoma (918) 459-2285 (918) 459-2350 FAX Mumtaz Bora <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 09/15/2005 08:20 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Mumtaz Bora <[log in to unmask]> To: [log in to unmask]@SMTP@Exchange cc: (bcc: Stephen R Gregory/LABARGE) Subject: [TN] Rework for Delaminated PWBs Dear Technetters, We have received a large batch of PWBs that is showing delamination after reflow at peak temp. 230C. Laminate is high Tg - 170C. Supplier is proposing to perform the following rework -- on these boards instead of providing replacement parts. Oven bake at 190C for 2.5 hours followed by second bake at 150C for 2 hours at 6kg/cm2 pressure. Will this guarantee a full cure? I am concerned about latent failures and layers opening up as full cure was not achieved the first time. Any inputs from the forum will be appreciated. I will request Steven Gregory to place the image of delamination on his website. Have a great weekend. Thank-you Mumtaz D/ 252 - SMT Process and Component Quality Bldg. V238E Voice (858)-882-1967 Fax (858)-882-3126 Page (858)-635-1180 Cell: (858) -449-7054 email: [log in to unmask] Kyocera-Wireless Corp. 10300, Campus Point Drive --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- San Diego, Ca 92121,USA __________________________________________________________________ This message may contain information that is privileged and confidential to LaBarge, Inc. 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In such event, you should destroy the message and kindly notify the sender by reply e-mail. --------------------------------------------------- Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- __________________________________________________________________ This message may contain information that is privileged and confidential to LaBarge, Inc. 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