I had this problem. Sent it to repair and after 3 months it did it again. <-- repeated another time. Then I connected it with usb to my Laptop lenovo s-10 ., before I turned the Laptop on. When I turned the Laptop on my Honor 6 began to charge. It was dead, totally dead before. Wouldn't charge with a charger, whatever charger I used nor would it charge, when I connected it to the turned on Laptop. I only tried it once.
Good luck Bodil