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Solid colors are flashing on the screen.

When I turn on the macbook there are flashing colors on the screen. If I press on the screen of the bezel sometimes it seems fixed until it is moved. It starts going back to the flashing colors again.

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Sounds like your LCD may be trying to fail. Hook it up to an external monitor and see if the problem persists on it, that would indicate a GPU failure. Let us know your results.

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how do I replace lcd orgpu

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LCD replacement - iBook G4 14" 933 MHz-1.33 GHz LCD Replacement

Replacing the GPU requires a rework station and is not economically feasible on this machine.

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