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Original post by: macbilzi ,

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If sleep light stays on and you get no video (with the brightness turned up) the logic board is not getting EFI information and changing the dc-in will not help. It is a logic board, not a power, issue. If light goes out and it is  2.2- 2.4 GHZ model and probably a faulty N-Videa chip, in which Apple will replace the logic board at no cost if within three years of purchase, possibly extended to 4 years. If light stays on and PRAM and PMU rest don't help, replace the logic board.

If there is very dim imaging on the screen, it is either an inverter (most often), or the lcd screen or, again, the logic board.

Bilzi Mac Consulting

Wilmington, NC

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open