No power to powerbook

Specs: 17inch powerbook G4 1 ghz 512 ram.
Problem: laptop will not charge the battery. when plugged in the battery lights do not flash as if they are charging. when the charger is connected, if i press the button on the battery it flashes quickly as if it were dead (which it is) and then the light goes out. If i plug the laptop in without the battery, It will not turn on. I have zapped the pram, nothing happens. When i plug it in without the battery and press the power button i hear the hard drive attempt to spin, when i press the caps lock button the green light comes on, so I assume some sort of power is getting to the unit. I'm assuming that the pram battery is dead. Is there any way to recharge it or am I stuck replacing the whole part? The charger is an aftermarket but is the 65w adaptor. And I have tried another adaptor to no avail. Any help would be appreciated. Thanks


Welcome to the Apple discussions.
The Pram battery being dead would not stop your system from booting up. It sounds like either you have an issue with the DC-in card or the logic board. There are only 4 components to the charging circuit: the power adapter, the DC-in card, the battery, and the logic board. Since you can't start up without the battery, the DC-in card or logic board may be the problem. As you hear it try and start up, it's more likely it's a logic board issue rather than a DC-in issue.
The pram battery replacement comes on a small circuit board, and is available for around $90.