syntaxerror wrote:
fzabkar wrote:
Use a soft pencil eraser instead.
OK fair enough, however I think this would fail with some more severely oxidized contact reeds...Nevertheless, I do concede that my method will require a lot more fine skills and maybe experience too - to make sure that none of the sensitive tracks on the PCB will get damaged in the process.
There is a very good reason for not using sandpaper on contacts. Most contacts are made from some common metal and plated very thinly with nickel or nickel and gold or other. when you sand the contacts, you remove this plating exposing the underlying metal that will likely rust quite quick.
an eraser will clean but not damage.
for an anecdote, I had quite a number of torches that I would take fishing for Snapper, so near salt water the terminals would corrode. I would clean the contacts with sandpaper, thinking the torches were just crappy. You wouldn't believe the amount of totally rusted torch battery terminals I had. As Mr Obvious's long time listener, first time caller would say "oh, I never made the connection"
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