I live in a country with 220v, and without thought I connected my 110v Wii into the wall. Needless to say, the AC adapter did a loud noise and started smelling like burned plastic. Afterwards, I borrowed my cousin's AC adapter, connected it to my Wii and a 220v to 110v transformer. It did work, but now when I turn on my Wii the AC adapter (my cousin's) makes a weird noise, like static, and the TV showcases the Wii video with video static. What could be the problem? Should I be worried?