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I used to clean old computer sockets and terminals with citric acid solution in alcohol. It worked fine for long time, but for the tiny connectors of DIMM Ram sockets it works for a very short time before the disconnection problem appear again.
What solution do you have for this problem?
There should be a chemical that can clean oxide from metal and create a conductor protection layer.
after few time using it ended very bad, I accidentally fried HDD socket polypropylene working fine
I’d be hesitant to use citric acid to clean any kind of electronics since it’s likely to cause corrosion. My first choice would be isopropyl alcohol, with mild abrasion if necessary such as a toothbrush. Acetone might be an option as a stronger solvent but that attacks many kinds of plastic.
