powerbook g3 walstreet 12.1 display need help!!!

The 12.1 model does not have enough VRAM to drive the larger displays - to run a 13 or 14" screen you would need to replace the motherboard.

To get at the dispaly you will need a torx screwdriver (a T8 I think), you will find screws under the rubber bumpers at the top and under small glued in plastic discs at the bottom. Once these are removed carefully lever the two halves apart doing as little damage as possible - by gentle levering you should be able to see where the latches actually are, pushing the inner bits inwards with a small flat-bladed screwdriver will ease separation.

The display itself will be screwed to the back piece of the hosing - unscrew it and carefully pull it forward, behind the display you will find the connectors for the backlight and data feed which you can now disconnect.

Fit new screen, reconnecting as you go (which should be easy as long as the display is exactly the same), clip display back together, refit the screws and glue the bumpers and discs back in.

You may want to test the new display before screwing the display frame back together..........

Good luck!

If you haven't started ripping apart your powerbook yet, check out www.ifixit.com. They have online manuals and parts sales. Very helpful website if you are not an Apple repair tech.
G.