I recently re-entered the Master System market after I got a Hang-On/Safari Hunt unit off eBay, and it's been working fine until 15 minutes into Phantasy Star. Basically, unless I put a lot of stress on controller port 1 by pushing it upwards, button 2 does not work. I've opened the unit, and as far as I can tell, the solder looks fine, and the pins aren't bent or anything. I think the culprit lies within the plastic casing for the ports, but I didn't see any easy way to get into it. I've checked various forums, and people have said that this is becoming a problem with virtually every aging console and computer using a DB-9 port. My question is, could it be something else, too? One thing I've noticed is the board has crazy rust along the outer ground edges, and there are spots with what appear to be rust in the middle of the board, but have been covered with some type of clear glaze (I don't think it's rosin), and it's the Chinese board, so I have a hard time understanding just what is going on at several spots. Also, I've never had to deal with this problem before on anything I've ever had, so if I just need to replace the ports in the console, do I need to get them from an as-is console, or are they in stock your friendly neighborhood RadioShack? They're not quite the same as ones I've actually worked with, what with the pins being on the bottom side of the port.