12" G4 PowerBook charger(s) mysteriously stop charging

I have two ac charger cords for my PB - the one it came with and a backup. My battery is about three months old and seems to be very healthy. The problem is that the cord arbitrarily stops charging (thought it was the cord, used the backup - same thing happens). The light on the cord where it plugs in to the computer goes off and I must unplug it from the power source and replug for it to start charging again, which it always does.

I thought it was the outlet on the surge protector, so I switched outlets. No improvement. I thought then that it might be the surge protector itself, so I plugged it directly into another outlet, to no avail.

I thought I'd ask if anyone else has had this issue. I searched the forums, but I'm not finding anything, and I'm not really sure how to ideally word it for a search so I thought I'd ask.

666sheep said:

Seems like your charger or DC board in your PB is going bad. Try with another charger if you got possibility.

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Thanks - I have two chargers and the same thing happens on both of them. I'm guessing it's not the chargers or the power source, but I am sincerely hoping it's something easily fixable because, while I need a new computer, I cannot afford one at the moment.