White/Grey screen

My ibook works fine. That is the hard drive boots up and I can hear the system work. When I Plug it into an external display I can see the desktop and all the applications work. I do, however cannot see anything but a white/grey screen on the built-in display.
A few days prior to this I recieved an external display adapter that connected the s-video/RCA to a monitor as opposed to the regular VGA external plug in. I'm not sure if this may have caused the problem or if its just a coincidence. I have reset the RAM as well as the PMU an have had no luck. Do I need a new display or is there something else Im missing here.
Any help would be greatly appreciated.

spitlogic
My ibook works fine...When I Plug it into an external display I can see the desktop and all the applications work. I do, however cannot see anything but a white/grey screen on the built-in display.
Since the external works fine the GPU is good. This sounds like a problem with the LVDS cable. It's on the left side as you look at the display. Depending on if it's a 12 or 14" it plugs into the logic board. Either it's unplugged or (more likely) the cable is damaged, usually right at the hinge point.
A few days prior to this I recieved an external display adapter that connected the s-video/RCA to a monitor as opposed to the regular VGA external plug in. I'm not sure if this may have caused the problem or if its just a coincidence.
Not sure how that works? I'm here on a 14" G4 1.2 GHZ and there is no S-Video out.
Richard
Message was edited by: spudnuty

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