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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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Does the A1181 have a 20PIN or a 30PIN LCD connector?

I have Does this look like a faulty inverter? issue: The screen lights up momentarily if I turn brightness down to zero then hit one step up. But it doesn't stay on. The macbook is otherwise perfectly fine, connected to an external monitor. I am dusting off this delayed repair, now that my new macbook has failed.

I already replaced the inverter board. That didn't help.

I checked the inverter cable with an Ohm-meter. Even with gentle wiggling, the connections are very reliable.

From all the discussions on ifixit, I conclude the CCFL needs replacing, which in turn means replacing the LCD panel.

The Macbook model is A1181 and typing

ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6 | head -1

in the Terminal reports that the screen is

LTN133W1

Display Preferences reports that the manufacturer is 00000610 (Samsung) and the model is 00009C5B.

Yet it seems there are two LCD screen models on the market, one with a 20PIN connector and the other with a 30PIN connector.

How do I determine which model fits my A1181?

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Calaf C, take your panel number LTN133W1 and check the datasheet, you'll see that the panel indeed has 30 terminal pin assignments, but only the first 20 are being used. This is of course for the panel with the L01 suffix. So, the safest thing to do would be to count the pins on the connector of your display cable. Also, do physically check the panel number. I just checked the service manual and the panels for the A1181 are listed as Apple Part #: 661-3959, 661-4211, 661-4398, 661-4579, 661-4713, 661-5069 which then cross reference to the Manufacturer Part #: B133EW01, LP133WX1 (no LTN133W1) The apple part numbers are suitable replacements for the following models:

MacBook 13.3" 1.83GHz Core 2 Duo (A1181) - Late 2006

MacBook 13.3" 1.83GHz Core Duo (A1181) - Mid 2006

MacBook 13.3" 2.0GHz Core 2 Duo (A1181) - Early 2009

MacBook 13.3" 2.0GHz Core 2 Duo (A1181) - Late 2006

MacBook 13.3" 2.0GHz Core 2 Duo (A1181) - Late 2007

MacBook 13.3" 2.0GHz Core 2 Duo (A1181) - Mid 2007

MacBook 13.3" 2.0GHz Core Duo (A1181) - Mid 2006

MacBook 13.3" 2.13GHz Core 2 Duo (A1181) - Early 2009

MacBook 13.3" 2.16GHz Core 2 Duo (A1181) - Mid 2007

MacBook 13.3" 2.1GHz Core 2 Duo (A1181) - Early 2008

MacBook 13.3" 2.1GHz Core 2 Duo (A1181) - Late 2008

MacBook 13.3" 2.2GHz Core 2 Duo (A1181) - Late 2007

MacBook 13.3" 2.4GHz Core 2 Duo (A1181) - Early 2008

For further clarification, give us the complete serial number of your computer. Hope this helps, good luck.

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My issue is that I would like to determine the connector *before* opening the laptop. Then when the part arrives and I start to disassemble, I know the part will fit. If I understood correctly, you suggest that I disassemble, count the pins, and keep the machine out-of-order until the part arrives or else assemble and disassemble again when it arrives. I suppose that for someone who has done this often, putting everything together is routine, but for someone who will spend the better part of a day (with frequent interruptions to read everything online carefully) assembling the laptop, doing it all in one day is far nicer. So: are you indeed suggesting that there is no software method (by that I mean from the outside) to determine the # of pins on the connector?

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Yes, or just order one of the panels suggested from the service manual " I just checked the service manual and the panels for the A1181 are listed as Apple Part #: 661-3959, 661-4211, 661-4398, 661-4579, 661-4713, 661-5069"

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Calaf C will be eternally grateful.
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