Screen comes on but does not light up.
I have a PowerBook G4 Aluminum 17" 1-1.67 GHz and it was working fine. All of the sudden the screen comes on but does not light up. I was told that it was probably an inverter board, so I bought a replacement. After a 6 hour tear down and reconstruction it does the same thing. All wires are connected and tight. Any help or ideas would be appreciated.
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