I've been getting started on my portable Nintendo 64, but looking at the motherboard I'm worried the thing will die sooner than it should. A few of the pins on the main CPU show signs of corrosion as shown in the photo. Note the green and dark grey discoloration. I'm not sure how to deal with the issue. If I clean it up then the pins might get too thin, but if I do nothing it may encourage further corrosion. Perhaps I could paint over the pins with something? I've had this console for about a year and a half now and so far it works just fine. The pins were like this when the system arrived.