My Galaxy pad would not turn on after the battery had died. I left it charging for hours, it would not turn on. I have tried to hold the power button for 30 seconds before and after it is charging but it would no turn on. I’ve also tried to press the volume buttons and the power button again for 15 seconds but it would not turn on. I am 100% that there is NO water damage. what are some other things I can do to try to fix this?