I have an ibook g4 16 vram lcd and a display adapter, i plug it in to the video out port, and nothing shows up on the tv. I know the tv is getting signal because there is a little noise on the tv when i plug the display adapter into the computer. I have tried rebooting and sleeping, but the screen is still black. The display prefs act like it is not there, and its mac 10.3.9 if that makes a difference.