Internal monitor Show double image
A friend of mine have this Powerbook G4 A1052 1.33.
The internal monitor now works only at 640x480 and 800x600, OS recognise it as "VGA Monitor", and the screen is "doubled", as you can see on the following image:
On the external monitor everything works well.
I've already tried reset nvram, pram, etc (also via open firmware at boot), nothing changes. It's the monitor that needs to be changed?