I have the same problem, I have bought 7 cables, they worked for about three days each. Two of them original Samsung cables. I even bought and changed the battery. It actually worked wonderfully for ONE day. Then bam, the same crap again. Do I need to change the charging port?. I am disabled and spend my life on the couch with this tablet. It is two years old so of course out of warrantee. Any help is appreciated.