Why is my PowerBook g4 screen white?
I have a powerpook g4 with a broken screen. I replaced it, but I have a white screen (no display). I plugged in an external screen and it came great.
Here's a link with great pictures of someone who had the same broken screen problem you have. http://www.david-reitter.com/software/Po...
The first thing to do would be to reseat your cables and review carefully the installation instructions you can find here: PowerBook G4 Aluminum 15" 1.5-1.67 GHz Display Replacement
Are you sure thenew display was good? Where did it come from?