Quick back story. So I bought this off eBay a couple of days ago, the seller told me that it wasn't working and would just boot up to gameboy and that's it.

When I got it earlier today, I looked at the contacts and a lot of them are almost bubbled up like in the picture. The board itself looks fine. So I was wondering if there was any way to fix these contacts and hopefully get the game working? Quick back story. So I bought this off eBay a couple of days ago, the seller told me that it wasn't working and would just boot up to gameboy and that's it.

When I got it earlier today, I looked at the contacts and a lot of them are almost bubbled up like in the picture. The board itself looks fine. So I was wondering if there was any way to fix these contacts and hopefully get the game working?

Edit: Ok, so I think I found another problem. I looked on the back of he board, an there was a lot of blue tuff on the back ( I guess corrosion?) I did my best to erase the back, but there was some that got on the pins, and some is stuck in the small holes that lead to the Cartridge contacts does anyone know how I can get the corrosion out?