Dear Steve, The first thing I used to do is get a piece of Scotch tape press
on the entire length of the finger area and pull quickly away, this usually
will tell you how extensive the problem is. Then using a plating electronic
pen or (wand)replate carefully areas affected. This problem in my experience
is caused by improper rinsing between plating baths and or oxidized
copper.Remember the fingers are no longer bussed together and trying to
strip all and replate usually does more harm than good. Best Regards, Jim
Jablonsky
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Friday, October 28, 2005 11:37 AM
To: [log in to unmask]
Subject: [TN] Gold Plating Peeling...
Well, I just got back from "Sin City", and as they say; "no rest for the
wicked".
I really wasn't that wicked, but I was confronted with a new problem this
morning.
We just built some assemblies and conformal coated them, but when they were
being
de-masked, the gold plating on the fingers started peeling up! Check out:
http://www.stevezeva.homestead.com/files/Peeling_Plating.jpg
http://www.stevezeva.homestead.com/files/Peeling_Plating_2.jpg
I have a couple of questions:
Can I repair this?
If I repair this, should all fingers be stripped and repaired?
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
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