My LG G3 will not turn on with the power button alone. It will turn on by holding the power button down and then plugging the charger in. When the LG flash screen shows you release the power button. On top of that the power button will not bring up the power off screen when the device is running. I'd guess a bad power button if the "charger trick" didn't turn it on. Has anyone seen anything like this before? Thanks in advance!