rhindlethereddragon Posted October 31, 2010 Share Posted October 31, 2010 I got a cart off Ebay a while back and when I got it, there seems to be this strange green "corrosion" on the pins. What is this, how do I get rid of it, and is it OK to put into my Atari machine? Quote Link to comment Share on other sites More sharing options...
iwan-iwanowitsch-goratschin Posted October 31, 2010 Share Posted October 31, 2010 It sounds like green rust to me! Clean it with fine sandpaper....... 1 Quote Link to comment Share on other sites More sharing options...
GroovyBee Posted October 31, 2010 Share Posted October 31, 2010 Its the result of copper oxidation. Copper is used to form the tracks on the PCB and is gold coated for the cart's contacts. Try removing it with ultra fine grit sandpaper e.g. 800 or 1000 grit. 3 Quote Link to comment Share on other sites More sharing options...
Keatah Posted November 1, 2010 Share Posted November 1, 2010 Its the result of copper oxidation. Copper is used to form the tracks on the PCB and is gold coated for the cart's contacts. Try removing it with ultra fine grit sandpaper e.g. 800 or 1000 grit. In some cases I've seen the green stuff in powder form. And it takes nothing more than some toilet paper to remove it. Quote Link to comment Share on other sites More sharing options...
Rik Posted November 2, 2010 Share Posted November 2, 2010 I use emery board nail files for extremely dirty contacts that wont come clean from the usual Isopropyl Alcohol/Q-tip treatment. Quote Link to comment Share on other sites More sharing options...
CGQuarterly Posted November 2, 2010 Share Posted November 2, 2010 Emory boards seem like they would be a lot more rough than needed and would remove more metal than neccesary. As GroovyBee suggested, I would use 1000+ grit sand paper. Chris Quote Link to comment Share on other sites More sharing options...
Rik Posted November 3, 2010 Share Posted November 3, 2010 (edited) Well there's different grit for nail files also.Yeah, i'm going to stop using any type of sandpaper and just scrub away with alcohol.I think repeated sanding with any grit number paper will chew away the contacts and make loose connections?, that's what i figure. Edited November 3, 2010 by Rik Quote Link to comment Share on other sites More sharing options...
A.J. Franzman Posted November 3, 2010 Share Posted November 3, 2010 The gold plating on the contacts is rather thin and if you sand through it, you'll have more problems than you started with. Quote Link to comment Share on other sites More sharing options...
Charlie_ Posted November 4, 2010 Share Posted November 4, 2010 The gold plating on the contacts is rather thin and if you sand through it, you'll have more problems than you started with. Scotch-brite works great. I don't use the home cleaning version. I use a red type we have here in the machine shop. Quote Link to comment Share on other sites More sharing options...
Galeforcerm Posted November 4, 2010 Share Posted November 4, 2010 I use a pencil eraser. The pink ones work well. Quote Link to comment Share on other sites More sharing options...
Dittohead Servbot #24 Posted November 14, 2010 Share Posted November 14, 2010 Oh yes, when I was cleaning my NES carts, I got not only the expected black on the cotton swabs/rubbing alcohol, but I sometimes got icky green like the OP described (ewww...). Clearly the carts were quite dirty but I kept at it and now they all work first try every time like they should. Quote Link to comment Share on other sites More sharing options...
cybercylon Posted November 14, 2010 Share Posted November 14, 2010 I use emery board nail files for extremely dirty contacts that wont come clean from the usual Isopropyl Alcohol/Q-tip treatment. I would try the cleaning with alcohol first before doing anything else. Quote Link to comment Share on other sites More sharing options...
GreenDayRlz Posted November 14, 2010 Share Posted November 14, 2010 If you get most of it all, use this. This will clean EVERYTHING else off it, even some corrosion with a little more elbow grease. http://reviews.ebay.com/The-SECRET-to-Cleaning-NES-Nintendo-Game-Connectors_W0QQugidZ10000000001205863 Quote Link to comment Share on other sites More sharing options...
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