I was unable to power up my 3½ year old powerbook G4. I dropped it off for service and was told the logic board is dying and needs to be replaced for AUD 1,500.00. Is this a common problem and what are the causes? Is replacement the only option or can they be repaired? We had a power surge immediately preceding the problem which blew out our wireless modem, washing machine and electric gate. Is it possible a power surge would cause the logic board to fail or is our problem likely purely coincidental?