Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

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black display troubleshooting sequence

My Macbook 5,2(early or mid 2009?) suddenly has black screen. I replaced the display power inverter board, but that didn't fix it.

How can I tell if the on-logicboard video processor is bad, or the display itself?

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Hook up an external monitor, if you get video through it then you know that the Logic Board and video processor are good.

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Tim Thomas will be eternally grateful.
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