Does the graphics card provide power to the screen

I am a very senior bloke know very little about computers I have a Powermac g4. My screen that comes with the computer is out of action, tried another identical screen this one  didnt work either, can any one advise, could it be the graphics card? Peter

Hi Peter,
It would only porovide power if it were an ADC Monitir & ADC Video card connection.
There's 3 possible types, ADC...
VGA & DVI...
Power Mac G4: Display Compatibility...
http://support.apple.com/kb/HT1825
Safe Boot from the HD, (holding Shift key down at bootup), Does that show anything on the screen?

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