Take the 2-minute tour ×  My Galaxy Tab 2 10.1 powers off each
time I disconnect the power/sync cable or when I connect it to a
AC power source. It just shuts off without warning.
share|improve this question  closed as not a real question by
ce4, Al E., Izzy, Flow, roxan Sep 8 '12 at 2:44   Okay. What's
the question here? Is it really powering off, or is it just
going into sleep mode? –  Al E. Sep 7 '12 at 12:40  1 Answer 1
Without further details, I believe you've got an issue with the
port where you connect the cable that causes the device to
shutdown.  Some short-circuit happens and the device gets turned
off.  My recommendation, take it to repair with or without
warranty. Don't let this continue much longer or the device
eventually will get irreparably damaged.  Ps: Assuming you've
tried another cable and power jack...  share|improve this answer