Acer AL1715 going on and off (LED blinking)

Hi maxwell,

Firstly check for the surrounding components like th coupling resistors for a short. Change them, then look for leaky diodes (a diode shows low resistance when connected to a multimeter with correct polarity and MUST show infinite i.e. NO resistance at all when polarity of the meter testprods are reversed) As for the deformed capacitor change it with similar type, voltage and size.
VERY IMPORTANT: Make sure you put in the new one back in the same polarity (since it is an electrolytic type capacitor from what you mentioned in your querry) elase the new one will explode if the polarity is wrong.

Better still, if you are not good at soldering components that are so closely attached on the circuit board, just give it to an authorised service center in your area.