psp wont charge

charging light will not come on when i plug in the charger. is this a battery problem or charger problem or what?

try using other psp or battery or a new charge

try charging your battery in another psp with the same charger see what happens and if it charges take your psp back under warranty if it doesnt buy a new battery or power lead.
also have you tried cleaning the dust from the power socket and charger, sometimes my psp plays up and i need to jiggle the end of the charger a bit