My 3400 has periodically done the same thing. Usually, pulling the battery and resetting the PRAM solves it. I don't know whether you pulled the battery or not, but that is the only way to get mine to reset.

It could be the backlight, though, or the power inverter.

Gary
On Thursday, June 10, 2004, at 11:26 AM, Clark Martin wrote:

At 5:56 AM -0500 6/10/04, Caristia wrote:
I have a 3400c/180 powerbook that was working perfectly until POOF - while
typing, the screen just disintegrated and went blank.


I've tried pressing the reset button and resetting the PRAM. Nothing.

It restarts - there's the dong sound, then a whirring noise inside but just
blank screen.


Any ideas on what's gone bust?


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