> -----Original Message----- > From: Mark Secker [mailto:[EMAIL PROTECTED] > Sent: Monday, 30 June 2003 9:09 AM > To: [EMAIL PROTECTED] > Subject: G4 PowerBook power supply question. > > > Memory's just been jolted by the last list question (about g3 > powerbook charging problem). > > Wondering if any other G4 PowerBook owners have noticed this little > issue that I've had with mine and if so have any ideas? > > Some times when setting up/powering up the Powerbook when on mains > supply there is no light on the (powerbook side) plug of the charger. > while it is easy enough to fix by removing the mains side plug from > the adaptor and plugging it back in again it doesn't seem to be > caused by a loose connection been broken then remade as some times > the problem arises when I switch off the power-board and switch it > back on. > > The issue is not major in and of it's self but given that the > resulting battery discharge is cumulatively diminishing my > PowerBooks total battery life this could be an expensive issue in a > year or so. > > I have not been able to find anything via Google or Apple tech site > (though my search criterea might have been off)
This is usually a problem with the power supply, specifically if just plugged in the mains, it could be a start-up issue with the SMPS driver. If it happens both at start-up and drops out while running, it is either a thermal fault (i.e. something getting too hot) a bad solder joint, or an over current shutdown. This raises an issue with designs, some power supplies are on their limit when sent from the factory, you add a bigger HDD, more ram, a bigger battery pack and the poor power supply suffers :o( usually another power supply will fix the problem :o) Regards, Kat. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.443 / Virus Database: 248 - Release Date: 10/01/2003
