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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: DiskChris on September 12, 2012, 12:57:30 PM

Title: Exposed Copper Lacquer Necessary?
Post by: DiskChris on September 12, 2012, 12:57:30 PM

So after a long drawn out battery removal surgery, my amiga 2000 is working!! I did manage to expose some copper under the 68000 socket when my screwdriver slipped trying to remove the cpu for acid damage inspection.  I tried to use my chip puller, but the chip is too thick.... Anyway should I cover the exposed traces with some kind of lacquer to prevent corrosion? What should I use? I would prefer not to have to mess with it, but only if its safe to leave that way.

Title: Re: Exposed Copper Lacquer Necessary?
Post by: TCMSLP on September 12, 2012, 01:21:54 PM

IMO it's not needed.  Sure, the copper will tarnish but it won't corrode.  Electrically I don't believe it will make any difference.  I wouldn't worry!

Title: Re: Exposed Copper Lacquer Necessary?
Post by: danbeaver on September 12, 2012, 05:25:50 PM

TCMSLP is absolutely correct; the copper oxide patina conducts electricity very well and the only reasons for covering it would be to prevent further scratches or accidental shorts in the circuits exposed

Title: Re: Exposed Copper Lacquer Necessary?
Post by: ChuckT on September 12, 2012, 07:00:10 PM

Quote from: DiskChris;707813

So after a long drawn out battery removal surgery, my amiga 2000 is working!! I did manage to expose some copper under the 68000 socket when my screwdriver slipped trying to remove the cpu for acid damage inspection.  I tried to use my chip puller, but the chip is too thick.... Anyway should I cover the exposed traces with some kind of lacquer to prevent corrosion? What should I use? I would prefer not to have to mess with it, but only if its safe to leave that way.

Are you saying the solder mask is coming off?