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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Backlight doesn't work after replacing inverter.

The backlight blinks on start up, but fails to illuminate the screen. To test as whether or not it was the bulb or inverter, I hooked an inverter from another laptop to the bulb and confirmed the backlight worked. I then bought a new inverter and replaced the old one. Still I have the same problem, I checked the cable with a meter and had continuity across all 4 wires. I checked voltage and found 5v on the first wire, 3.5v on the second, gnd on the third, and 12v on the fourth. Anyone else have any ideas. Thanks

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Sounds like you may have gotten a bad inverter or failed to connect the wires correctly.

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Hello folks,

I also have the same problem with backlight and then i measure the voltages on 4 pins of inverter cable, multimeter shows 3.2 V on 1-st pin, 3.5 V on 2-nd and 12 V on 4-th. here I saw that the voltage on 1-st pin should be 5 V and I get only 3.2V. in this case there is inverter problem or something else? thanks ;)

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