Yes, certainly could be photoresist. Joel -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo Sent: Wednesday, June 03, 2015 11:07 AM To: [log in to unmask] Subject: Re: [TN] PCB blob defect photoresist? just a guess. jk > Hi all, > > My PCB fab knowledge is limited, and a very unusual defect was > discovered (too late) in assembly. I'm wondering if anyone has seen > something like this before, or has an idea what this could be. The > blue color seems noteworthy to me. This is for IPC class III, space. I > will return this to the fabricator, but I wanted to get educated in > case there is a debate regarding the cause. Thanks for your help! > > Steve put the pictures here: > > http://stevezeva.homestead.com/Howards_Blob.jpg > > http://stevezeva.homestead.com/Howards_Blob_close.jpg > Howard A. Watson > > ______________________________________________________________________ > This email has been scanned by the Symantec Email Security.cloud service. > For more information please contact helpdesk at x2960 or > [log in to unmask] > ______________________________________________________________________ > ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ 3M security scanners have not detected any malicious content in this message. To report this email as SPAM, please forward it to [log in to unmask] ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________