Maybe those in the IPC-A-600 Task Group can throw some light on this observation.

Thanks and Regards,
~wee mei~

"Successful people aren't born that way. They become successful by establishing the habit of doing things unsuccessful people don't like to do. The successful people don't always like these things themselves; they just get on and do them." - William M Thackeray

From: Steve Gregory [mailto:[log in to unmask]]
Sent: Thursday, 3 October 2013 2:46 AM
To: Lum Wee Mei
Subject: RE: Grey Matter

Hi Wee Mei!

Hmmm, not so sure, depends on what it is? Is this on bare boards that have not been assembled yet? Have you tried cleaning it?

Anyways, I have your picture posted, it's here: http://stevezeva.homestead.com/LumWeeMei.JPG

Maybe you can get some good input from the group from someone who might have seen this before...

Kind regards,

Steve

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