minh co cay v620mo to ban dau may bi mat nguon do pan mem minh chay len xai duoc ,nhung khi gap may lai de khoang co 2 -3 phut mo nap ra thi ko hien thi , bam cac nut thi co 1 phut may moi len man hinh , goi toi tra loi thi bam nut nghe gan 3 phut moi tra loi hoac tat ko nghe , khi ap pin vao man hinh phu bi cham , cac ae nao co gap wa chi minh dum ,minh da thay thu man hinh , va lam cac buoc kiem tra socket roi , nhung van vay , nguon po van tot ko pi gi