Steve,
Really very ugly boards.
To my opinion the clue is on the first picture : blisters on non-drilled
area.It mean completly failure of the board.
You may call it "blisters".To my opinion this is delamination.
For sure reliability of those boards is zero.
Cross section of the should show it.
If I am right, the list of possible reasons is very long starting from raw
materials , pressing procedures , HASL procedures ending with soldering
foults.
Edward

Edward Szpruch
Eltek Ltd
P.O.Box 159 ; 49101 Petah Tikva Israel
Tel  ++972 3 9395050 , Fax  ++972 3 9309581
e-mail   [log in to unmask]

> -----Original Message-----
> From: [log in to unmask] [SMTP:[log in to unmask]]
> Sent: å îøõ 29 2002 18:19
> To:   [log in to unmask]
> Subject:      Re: [TN] Blistering in PCBs
> 
> Don and Everybody!
> 
> The pic's are now up! Go to: http://www.stevezeva.homestead.com
> 
> I gotta say, those are some UGLY boards!
> 
> -Steve Gregory-
> 
> 
> 
> 
>       Hey Earl
> 	
>       Where can I see these photos?  Don't see them on Steve's site.
> 	
>       Don Vischulis
> 	
>       -----Original Message-----
>       From: TechNet [mailto:[log in to unmask]]On Behalf Of Earl Moon
>       Sent: Friday, March 29, 2002 6:49 AM
>       To: [log in to unmask]
>       Subject: Re: [TN] Blistering in PCBs
> 	
> 	
>       Vinit,
> 	
>       Ok, here we go. Never seen nothin' like these before. Oh well, maybe
> once
>       when I was a "young gun" process engineer at Xerox. That's another
> story
>       I'll not bore anyone with now.
> 	
>       Concerning the pics, it is obvious there is delam everywhere but
> maybe the
>       edges. Vinitdelam3's discoloration also is delamination, not solder
> mask
>       related.
> 	
>       Someone else take shots at this and Vinit's supplier. This shop
> shoundn't
>       exist unless they just lost it all on his boards ONE PING ONLY
> PLEASE.
> 	
>       A pleasure to serve Vinit. Don't often get to see how bad something
> can be
>       besides a train wreck.
> 	
>       MoonMan
> 	
> 
> 
> 

---------------------------------------------------------------------------------
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 e-mail to [log in to unmask]: SET Technet NOMAIL
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
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
---------------------------------------------------------------------------------