IMac G5 17'' - Bluish screen

My iMac g5 17'' display has turn bluish, but when i connect an external display it seems fine. Does anyone know what's wrong?

Mine too! Within the last week the screen started flickering and has now settled into an almost monochrome blue. My photoshop defaults are white and blue; even the flurry screen saver is on a field of blue. What gives? The RGB now seems mostly B.
My iMac g5 17'' display has turn bluish, but when i
connect an external display it seems fine. Does
anyone know what's wrong?
20in iMac G5   Mac OS X (10.4.9)  

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