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Gold finger touch-up paint

#8810

Gold finger touch-up paint | 26 October, 1999

We are having a discolorization problem with the gold fingers on our PCB's. I have been made aware that there is a gold touch-up paint (masking) that is available. Would anyone know where I can get my hands on some of it? Any help would be appreciated.

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#8811

Re: Gold finger touch-up paint | 26 October, 1999

Gary: Two things:

1 Reworking golding fingers is an old topic, check the SMTnet archives to get started. 2 Gold fingers should not be discoloring, unless:

* You are doing something bad to them ... OR * Your supplier has doinked the process, which is not trivial.

Before I spend a bunch of time reworking boards, I make sure my supplier is without fault.

My2�

Dave F

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#8812

Re: Gold finger touch-up paint | 26 October, 1999

A paint might be pretty but it won't do anything but bad for your fingers. What dave is suggesting that you run a search for is actually a spot re-plating process that you can perform with little mess or fuss. But really, find out why it happened and how to prevent it in the future. It probably won't help but did you try to lightly, repeat - lightly, rub the fingers with an ordinary pencil eraser? John Thorup

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