My lg km555 wont power on

SOURCE: Lg Vu wont charge

First you must determine is it the charger faulty or the phone ? , have you a friend with the same phone if so try her or his battery to see if your phone is ok if so try the charger with your battery and see if it charges if it does get a new charger , if it did not charge or work with your friends battery or charger the sorry it would be cheaper to buy a new phone than try to get it fixed ...
if you haven't got a friend with the same phone have a local electrician check if there is an output from your charger . if there is it may just be the battery try a new one if still no luck it is probably the phone's charger circuit gone pop ,, sorry .. vortash