Ps vita charging light shows but doesnt turn on

My vita slim shows the orange charging light when plugged in and after a while the light goes off and most the time when i try to turn it on it flashes orange as if its dead or it will turn on and the battery will still be red meaning it turns off again after a few minutes. Ive changed the battery twice and both batteries came with a full charge so it turned on until it died and the issue started again so this confirms that the screen is ok. Can anyone help me with this? Any help is appreciated.