Power G4 graphics card replacement

[pctech37]

I got a Powerbook G4 for free from a freind for free.
It is 17 alum. It starts then shows completey random (see photo attached) stuff. :bash:
Is is possible to replace the graphics card? THNX

Attachment:
http://farm3.static.flickr.com/2193/...031563.jpg?v=0

pctech37

[Spartan Erik]

I see why you got it for free.. sure it's not a problem with the LCD screen?

[pctech37]

it might be but i do know if connect an external display , it shows nothing

[Spartan Erik]

When you connect to an external display did you hit the key combination/button to tell the powerbook to direct the signal to the external display?

[pctech37]

what button, sorry first mac i owned!