[SI-LIST] Fixing a black pad

Hello all,
After removing a BGA components a black pads was seen on some of the
pads. Is it possible to fix it? If trying to use activated flux it is
possible to coat the pad with solder (receive back the wetting). Does
the black pad phenomenon will appear again on this pad (will I encounter
it later on other pads?)?

 

Thanks,

Gil Zilber

Elta systems




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