Need to take a tour and find out who of the two possible
culprits have that type of paint in house. If the paint is epoxy kind,
chances are that the board vendor made an error and spilled the paint.
Is it an expensive board? Perhaps the operator that spilled the paint
did not want to fess up due to concerns of being reprimanded. Check with
reference designator printing process (board house).
Regards,
Ramon
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Saint Jerky
Sent: Monday, October 02, 2006 9:26 AM
To: [log in to unmask]
Subject: Re: [TN] Customer or Supplier Inherent Defect? Share your views
I just the middleman for the sales of this PCB, now I am in dilemma
whether to reject this Analysis to the Supplier or claim it back to
Customer.
From what I see, this paint should happened before the components is
being mounted since there isn't any trace of paint on those components
surface.
But who did it? haha
Yes, it a multi-layer board but the delamination area have not pose an
issue so far.
On Mon, 2 Oct 2006 13:17:39 +0100, Colin McVean <[log in to unmask]>
wrote:
>Had you placed any sticky labels etc onto the assembly before
>fluxing/soldering. It seems like something has flowed or blown over the
>surface.
>
>I would also be concerned about the amount of delamination noted on the
>panel edged - it's a multilayer PWB! Ingress of moisture etc could
>cause issues later.
>
>Colin McVean M.Inst.C.T.
>Production Manager
>Artetch Circuits Limited
>Main: 01903 725365
>DD: 01903 712926
>Email: [log in to unmask]
>www.artetch.co.uk
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Dan Mauro
>Sent: 02 October 2006 13:06
>To: [log in to unmask]
>Subject: Re: [TN] Customer or Supplier Inherent Defect? Share your
>views
>
>I think it is interesting that no paint is present on any components
>from what I can see.. That tells me it is supplier and/or your
>operation created it!
>
>Dan Mauro
>
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of Saint Jerky
>Sent: Monday, October 02, 2006 7:49 AM
>To: [log in to unmask]
>Subject: [TN] Customer or Supplier Inherent Defect? Share your views
>
>I encounter 1pcs of excess paint on PCB returned from customer.
>Upon analysis by Supplier, they concluded that customer created the
>defect.
>The details is as below:
>Defect: Paint spread over the PCB
>Analysis:
>1) The affected surface was subjected to the fluxing process again and
>the stain was found to be removed from the process.
>2) The stain is unlikely to have been incurred during the bare board
>processing, as fluxing process is conducted just before Final
>Inspection and Packing,
>3) If the stain is incurred during the bare board processing, it will
>have been cleaned up during the fluxing process prior to inspection.
>4) Final Inspection and packing does not uses any material that yield
>such a colour substance
>Photo: http://img242.imageshack.us/img242/7362/bareboardzd6.jpg
>
>Based on the photo, tell me what you guys think? The chances that
>customer created it is higher or supplier? Come and share your views
>for my reference. Thanks.
>
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