vias

Does anyone have any tips for soldering to small vias? I'm having a tough time soldering to the U10 and controller data vias on my Wii, so I wanted to know if anyone had any advice for that or via soldering in general.

Hi! So, I finally got around to wiring up the u10 to one of the vias with the magnet wire I got on Amazon, and when I attempt to power the Wii on, the power led goes from red, to red and green, then to green and then just no light at all. UPDATE! The u10 was completely fried. I replaced it with...