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Projects, Designs, and Technical Stuff / Re: Corrosion on DIP pins
« Last post by rsjsouza on Today at 10:50:35 am »Assuming there was no ingress of any kind, as mentioned before the manufacturing of the computer might have either scratches some parts or left residue that slowly corroded over the decades. I have seen many boards like that.
One additional point is that there were crap and good leadframes as well especially from that era (1970s-1980s), even with parts from the same manufacturer but different lots or country of origin. Standards for handing and storage of ICs were still being developed.
Just an additional annoyance: MOSTEK is known nowadays to have a relatively high incidence of memory rot, which renders the IC unusable due to internal degradation even on ICs that are physically in good shape.
Good luck in your repair/restoration!
One additional point is that there were crap and good leadframes as well especially from that era (1970s-1980s), even with parts from the same manufacturer but different lots or country of origin. Standards for handing and storage of ICs were still being developed.
Just an additional annoyance: MOSTEK is known nowadays to have a relatively high incidence of memory rot, which renders the IC unusable due to internal degradation even on ICs that are physically in good shape.
Good luck in your repair/restoration!