minh dang hoi han khi mau smart tivi samsung k5500 day, loi ho sang man hinh va ho vien tivi kha nang ma samsung may lan toi coi xong cung phan do dac tinh cua phan pham chu khong phai loi. minh rat buc xuc. cac ban than trong khi mua tivi cua samsung keo ruoc buc vao minh