Macbook A1181 2006 Core Duo/1.83Ghz - screen dimming

Discussion in 'MacBook' started by tsoump, Jun 17, 2016.

  1. tsoump, Jun 17, 2016
    Last edited: Jun 17, 2016

    tsoump macrumors newbie

    tsoump

    Joined:
    Jun 17, 2016
    #1
    Good evening

    I got a used macbook A1181 2006 1.83 Ghz (32bit- non Estar) and there was a problem, at the begging, on the battery charging issue. I opened the macbook and I found a wrong battery connector / sleep SW component. To be clear:
    My logic board supports this (Non Estar- 20pins): https://www.ifixit.com/Store/Mac/MacBook-Battery-Connector-Sleep-Sensor-non-Energy-Star/IF186-015-1
    I found this (18pins): https://www.ifixit.com/Store/Mac/MacBook-Battery-Connector-Sleep-Sensor-Energy-Star/IF186-042-1

    The problem was that, when I insert a battery (original or not) the screen was dimming while (for example) surfing on the internet. So the macbook had not battery support - only by the cable.

    I supposed adding the 2 missing pins manually could solve my problem.

    After of many tries of adding 2 more pins and many SMC and PRAM resets, my screen dims (like inverter's problem) when macbook starts.
    The only way to open properly without dimming screen is when I reset SMC and start the macbook - and fan is go like crazy!!! (that's meaning not inverter's issue)
    After that I thought to clean all contacts with isopropyl alcohol in any case.

    I'm trying to find the problem that I caused and I believe that if:
    1. it's a software issue: is about SMC resets etc
    2. it's a hardware issue: is logic board power issue

    Thank you very much.

    Sorry for my English

    P.S. I also give you some photos from
    the logic board
    battery / sleep sensor and
    a video by laptop's behavior:

    https://www.dropbox.com/sh/0spkzmkjetys4f1/AAC6aZezboQfm9P2iBRZfX8Xa?dl=0
     

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  2. tsoump thread starter macrumors newbie

    tsoump

    Joined:
    Jun 17, 2016
    #2
    I'm thinking of buying a voltmeter and check some contacts.
    Is there anybody who has the schematics and the board view?

    Thanks in advance
     
  3. tsoump thread starter macrumors newbie

    tsoump

    Joined:
    Jun 17, 2016
    #3
    Is it appropriate to bake the logic board for 10' at 200 Celsius in the oven?
     
  4. tsoump thread starter macrumors newbie

    tsoump

    Joined:
    Jun 17, 2016
    #4
    I made to bring the backlight on screen back!

    I've got a multimeter , I also found the schematics and I was trying to calculate the contacts on the logic board nearby the Inverter.

    By mistake, I brought together two contacts,t he L9400 and the neighbor of it and suddenly I got the light back on the screen!!

    I do not know if this is a proper way, but I'm thinking of putting a conductive metal between them.

    Check the photos !!

    Let me know if it seems appropriate.

    Thanks in advance

    [​IMG]

    [​IMG]
     

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