Here are the top reasons this will happen:
There is a problem with the power supply on the phone.
The motherboard or circuit board has a short and is fried.
One of the capacitors on the circuit board is burned.
There was some sort of a short in your charging cable and you've burned the phone.
Just like any circuit board when a capacitor is burned the phone will heat up and not work. This happens a lot of time on a hard drive that something has burned on the circuit board and now the board will no longer function. When you apply a charge to the board this heats up the chips on the board because there is no longer a way to protect the board. The same holds true for any motherboard or circuit board.