What is the best way to clean the motherboards on these things? I just bought 3 Atari 2600s at a yardsale with 25 games for 10 bucks. One of them is pretty clean and I have it working, however one of the system is a 2600 Jr that I would love to get working, I just love the way they look so much better. However it is NASTY. The motherboard is just all kinds of crazy nasty. Here are two images of if:


Now I have read everything from aclohol with a q-tip to brake cleaner to water and letting it dry to just an air can. What do ya'll think will be the best solution.
Thanks
Disjaukifa













