ISight turns on, the computer recognizes that it's there but black screen

I hooked up the iSight and had a good picture. I then put it in the mounting device and attached it to my monitor. To do that I had to unplug the firewire. When I turned ichat on again, it noted that the camera was intact and it was also noted in the systems preferences. However, there is no picture on the iChat video section. When I turn the camera off, it recognizes this, but when I turn it back on, the screen is initially white but then becomes black.
Any ideas?
Thanks
G4 Mac OS X (10.4.4)

Hi Hank,
Go to your Home folder/Library/Preferences.
Delete com.apple.ichat.plist as it holds the camera details.
Restart iChat
You will lose Saved Status Messages, Bubble colours, Font choices, Alert Settings amoungst others.
Ralph

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ISight turns on, the computer recognizes that it's there but black screen

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