[PB2K]

I was browsing my emails with the ibook g4 800 Mhz, then suddenly the screen turns black. I hit the powerbutton shortly but then it shut down completely (hearing a plop, similar to when you hold the powerbutton for a few seconds to shut the machine off / aka hard reset)

after that I tried to boot but it won't.

I hit the powerbutton, i hear the empty dvd-rom drive kick in on the right, then the harddisk on the leftside of the machine, then it shuts down. all this takes no more than 2 seconds.

i tried this running on battery alone, no succes
on the powersupply alone, no succes
on both battery and powersupply, no succes
keeping the powerbutton pressed for a few seconds, no succes
PRAM reset, not enough time for that
inserting the Tiger DVD won't work because 2 seconds of powering up is not enough to suck in the dvd

[PB2K]

An ibook g4 that shuts down instantly after booting, how could I cure that?

[ChasingApple]

Sounds like the internal power board died or the motherboard died. Not much you can do there except have Apple take a look at it. Sorry to hear about your problem.

[PB2K]

I fixed my dead ibook !

I took off battery and powercord. left the ibook dead for two days so the logic board would reset itself due to a lack of power. then booted on the battery with CTRL+ALT+POWERBUTTON, and...Boooiiing

[pyrocat]

PB2K

Is your iBook still working? Mine had the same problem, but now it refuses to boot at all. Mine's the G3/600 with the wire that goes from the mobo through a hinge to the display.

It's either $280 for Apple to put in a new mobo, or get a MacBook for lots more. Hmmmm.