closeup of the tact switch snap dome. the dark areas are probably non-conductive metal oxides created by fretting.
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closeup of the tact switch snap dome. the dark areas are probably non-conductive metal oxides created by fretting. 3 comments
@tubetime that looks very like the contacts on my Apple MacBook Pro with the notorious butterfly keyboard. Interesting….. |
fretting corrosion happens when oxide layers build up between metals that "fret" or move by microscopic amounts.