Check your ps output settings. Hold the power button on your Playstation 3 until you hear a single beep and then release the power button. If you hold the power button too long, it will just power down your PS3. You should now see something. If you are not successful at once, try looking that up in youtube.
You can always use a battery charger(battery sized charger where you actually plug the battery and it charges). Had a problem with an Ace plus and decided it was a crappy phone. Didn't have much problems after. Not too fancy but works. (Be careful with your nails though)