"Why won't my Samsung Galaxy Tab 2 charge?"に関する回答I had this problem also. You have to open it up, unplug the battery, then plug the battery back in. Somehow the signal to charge is getting blocked. Reseting the battery is needed. Once this is done it will charge immediately. Bad news is I have had it happen about 3 times. Good news is it works everytime. This is a widespread problem with the tab3. Opening is not difficult. Just run a plastic spudger/guitar pic around the edge of the screen to release the clips. It did not appear that there are any cables to worry about damaging. You should hear the clips snap as you release them. There are about 4 per side. If your unsure there are videos on how to do it on youtube. Hope this helps.