LCD Failure - external screen

Good day
I purchased a 17" powerbook September last year. The LVD screen has failed and I cannot now afford to get it replaced.
When I took it in to be checked, we could use an external screen and everything worked OK. After it had been checked by an authorised apple repair centre, I can still start the powerbook up in target disk mode (I have copied off all my data) but I cannot use it with an external screen.
All I get on the external screen is what looks like one of the apple screen saver images - basically a blue screen with white swirls on it.
When I asked the repair centre what I should do they advised reinstalling the software by placing the original CD in the machine and booting. No change - still the same blue screen.
Whast am I doing wrong - or is there nothing to do but scrap the whole macine?
I'd be grateful for any suggestions you can offer.
Peter

Peter,
Your PowerBook is probably using your broken LCD as its main display.
Try this:
Press F7 (or fn F7) to mirror the desktop on both displays.
If you see your desktop on the external display, you can set the prefs to use the external display as the main display:
System Preferences > Displays > Arrangement:
drag the menu bar to the blue square representing the external display.
Hope this helps,
Patrick

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