Plug LG E970 Won't Turn on after full drain

I just got my phone repaired for a cracked screen. It was working fine until this morning. while i was driving home, i check my phone to see the time and when i touched it, it was hot and at low power. When i got home the phone was dead so i plugged it in to charge. Now the phone wont turn on but the LED light is on indicating its charging but theres no battery animation on the screen. Can somebody please help i need this PHONE!