A:AnswerNo, South American countries use a different broadcast system that that used in North America. If you want a TV that works in the United States, you need to get one built especially for North American broadcasting standards.
A:AnswerAs a tech expert, you should never mount it above a fireplace because of the heat created by it. Most installation teams (if they're good) should refuse to do it. Heat is the biggest enemy of computer components. Save your TV and mount it elsewhere.
A:AnswerThe One Remote will automatically work with devices that it identifies through HDMI, especially other Samsung products. However, if it does not recognize the device and gives a generic device, you can manually set it to possibly provide some functionality. Most common cable/satellite boxes, all in one sound systems, media players and DVD/Blu-ray players will get basic functionality such as volume, play/pause while some use the colored button function.
A:AnswerI don't know the exact length, but I would say it is at least 6 - 8 feet. I have my TV up on the wall and this cable running down and inside the wall to my system. I have plenty of length left up by the TV and down by the box.
A:AnswerYes, and you can use Samsung's no gap wall mount if you want a close flush look. There's still a bit of a gap, but less than any universal mount.