Good Morning,

I don't know how to explain this, but here goes... I have a bare board with,
what appears to be, delamination but I don't think it is.(can't identify any
layer separation).  There are four spots in the board (not on surface) that
are much lighter than the rest of the board.  These areas are in line with
each other.  Someone said it looked like a 'shiner'.  Has anyone heard this
term before?  If so, what is it, what causes this condition, and is there
any document referring to the acceptability of the condition?  I looked
through the IPC-A-600, but couldn't find anything that resembled this.

From someone who's trying to learn...
ps(I'm not real familiar with bare board acceptability conditions like this
so be gentle)

Connie Korth
K-Byte Hibbing Manufacturing

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