chao ban!truong hop cua ban neu mat chuong,ban kiem tra nguoi:đo noi tro tai tiep điem chuong,loa chuong,sau do la dien the cap ic chuong va tin hieu chuong tu ic nguon.con mat song ban kiem tra tiep xuc anten lai vi luc đa co song,con mat song do chuong trinh thi it lam,chuc ban thanh cong!