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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MacBook backlight doesn't work!

Hi, the backlight of my mac doesn't work. I can see something on the screen and when i turned it on or when i wake it up from the stop status, the display works for a few seconds... However i can't find what's the reason... I tried to fix the inverter but the problem remains... Can you help me???

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Apple MacBook "Core 2 Duo" 2.4 13" (White-08) Specs

Identifiers: Early 2008 - MB403LL/A - MacBook4,1 - A1181 - 2242

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To aid in trouble shooting, hook it up to an external monitor and see if it works. You could also have an Nvidia GPU issue, that can be ruled in or out if you'll give us the last three figures of your serial number. Do you get any changes when moved the screen up and down?

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The last three figures of my serial number are #0P1... Anyway i don't get any changes when moved the screen up and down... Why???

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Apple MacBook "Core 2 Duo" 2.4 13" (White-08) Specs

Identifiers: Early 2008 - MB403LL/A - MacBook4,1 - A1181 - 2242

If you don't get changes when moving the screen, your cables are probably good so they can be ruled out. You do not have the Nvidia GPU so that can be ruled out. At this point I would replace the inverter, Here's how: MacBook Core 2 Duo Inverter Replacement

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So i just can change the lcd??

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I know, but i've already replaced the inverter and my monitor doesn't work... so have i to replace the lcd??

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Please, provide us with the last four numbers and letters of your serial number. You can find it in system profiler.

And well, an ailing backlight usually stems from three reasons and half, since the fourth is so rare to be nonexistant:

1. A bent/worn out/damaged inverter cable, the cable running from the logic board to the Inverter Board

2. A worn out/aging Inverter Board

3. A worn out/aging CCFL lamp in the LCD (that also causes dim tones and pinkish/yellowish hues when the LCD is on).

4. The capacitors on the logic board, the ones close to the Inverter Cable (rare, really rare issue)

That means that the usual troubleshooting requires replacing the inverter cable and the inverter, and, failing that, swapping a new LCD panel.

You could also attempt to replace the CCFL lamp in the LCD, but that would require a painstalking work of peeling off the reflective film behind the display, avoiding to crimple it, desolder a thin lamp (imagine it as a neon, for a visual reference, just thin, very thin), resolder a new one, cross your finger and recheck everything.

The suggested order is:

1. Getting a new Inverter Cable, from a reputable source

2. Getting a new Inverter.

Failing that, a new LCD.

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+ very good answer

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The last four numbers and letters of my serial number are #C0P1...

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What Macbook specifically is it?

What did you do to the inverter? Did you check twice that all the connections are solid?

It is possible that the LCD screen is also the issue. But since there was a repair attempt on the inverter board, is it more than likely that. If you would please tell us what the model Macbook it is, and what you did to the inverter, then I can provide further help (along with others).

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It's a Macbook 13.3" 2.4GHz Core 2 duo, i bought a new inverter on this site and i replaced the old one but it still doesn't work...

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