Okay, I have a rev.B. 667Mhz powerbook (TiBook) - i.e. the one with VGA out, pre-DV out. About 2 months ago I ordered a new power supply from the Apple on-line store (to replace one my bird chewed up). This is the "new" three-prong version Apple is shipping (white brick as before, just 3-prong wall plug, versus 2 prong).

My problem - this power supply seems to "cut out" periodically, especially if the laptop goes to sleep. That is, the plug into the laptop seems normal (i.e. green ring when running, orange when charging), but every now and then, the indicator ring just turns off, and, sure enough, the TiBook is running on battery. If I unplug the power supply from the wall plug, and plug it right back in, the laptop plug indicator comes right back up (eg. green for power, orange for charging).

Why would the power supplu cut out like that? I have two other power supplies, both ordered and received when I bought the TiBook back in October 2001 (i.e. the 2-prong versions) which work flawlessly - what the heck has changed (Apple assured me this new power supply was backwards compatible with all G4 powerbooks??).

Anyone have any suggestions??

Note, my TiBook is fine, and the new power supply seems to work alright, just if left alone, it cuts out (i.e. it provides "good" power, when it's running right).