Fixing a friend's Powerbook 15". Newish 250gb hard drive. Bad battery that somehow prevented it from starting up. Put a good battery in it and it starts up but there is a weird clicking sound when the adapter is plugged in (it's not the adapter, it works fine on my Powerbook) and when it clicks for a few seconds, it then shuts off the adapter and the green ring light goes off. No orange light. It boots up okay on a battery. Is this a bad DCin board? The clicking sound and shutting off the adapter is a new one on me.