Thus spake Tom.Klun@redacted.invalid:
I have a 12" Powerbook G4. A few minutes ago the light on the power cord right near the laptop connected started flickering. Just after that a hissing/buzzing noise started coming from the connection. I got a bad feeling about this, has it happened to anyone? Let me know, I'm running out of battery!
Yeah, it sounds like the cord's insulation right at the connector is breaking down. Is there a small bump in the insulation near the connector?
Time for a new power supply. No fixes, that I know of...