Fit thin ITX in iMac over LVDS/eDP

Discussion in 'iMac Mods' started by Duk3, Jun 17, 2017.

  1. Duk3

    Duk3

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    Jun 17, 2017 at 2:22 PM #1
    Duk3

    Duk3

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    Hey guys,

    i planing to fit a thin itx mainboard like the Intel DQ77KB or newer board into an 24" or 27" iMac from 2008/09.
    i hope some people here can help me by same question.

    The plan is to connect the internal Display direct to the eDP/LVDS connector of the mainboard.
    Here i had found the Pinouts of all connectors:
    24" 2008 iMac : LM240WU2
    27" 2009 iMac : lm270wq1
    Intel DQ77KB : Manuel

    So i dont understand the connector of the 27" iMac right, but if i see it right i can use a 40pin to 30 pin LVDS cable to connect the 24" 2008 iMac display to the mainboard. The problem is i cant find a cheap cable for this. All mods here use LVDS to HDMI/DVI/VGA boards to connect the original iMac display to the motherboard. That is no sulotion for me.

    The next problem is i am not sure how i need to connect the backlight board on my mainboard btw. i need to check whether i can use the original iMac backlight board.

    Atm i such a cheap iMac to buy, if i had find one i will planning for details like will i use the original psu or will i take an extern AC-DC psu.

    hope you has idea for me and can help me by my project.
     
  2. FlyingApple

    FlyingApple

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    Jun 17, 2017 at 8:24 PM #2
    FlyingApple

    FlyingApple

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    Hello,

    So you have decided to mod an LVDS iMac. I am planning on resurrecting my 24in 2006 iMac soon, and here is my research.

    To convert the LVDS signal to DP,HDMI,DVI,VGA, you are definitely going to need a controller board. Find the Model number of your LCD and search on eBay "(model number) Controller Board". There is a seller called "eq store" where I bought my controller board. They are very helpful and you can ask them anything.

    As far as powering the display, you will need to choose one of the two options:

    1. LCD PSU. If you have a larger display, this board which usually is the same that is used to power LCD TV's will power your inverter and controller board. The basic connections for this method are the Controller Board, Inverter/Backlight Board, and PSU each connecting to each other. eQ store will help you pick out one of these.

    2. Laptop PSU. If you have a smaller or lower power display you can simply plug in your inverter to the controller board and power your controller board with a Laptop PSU. Not sure about this option, you will have to ask eQ store or another seller.

    Happy Modding!
    FlyingApple
     
  3. Duk3

    Duk3

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    Jun 18, 2017 at 7:59 PM #3
    Duk3

    Duk3

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    i think your research is not right. Thin itx boards has LVDS and Backlight control connecter on the board. so normaly i can use a LVDS LCD like this out of the i mac connect directly to the motherboard without a controller board or i am not right ?
     
  4. FlyingApple

    FlyingApple

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    Jun 18, 2017 at 9:39 PM #4
    FlyingApple

    FlyingApple

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    YOU might be right, but I think it would be simpler to convert your LCD to HDMI/DVI and standard power connections, then connect it to the thin mini itx board.

    I am familiar with the Thin ITX platform quite well, I have also been researching that for a while. I decided not to go with that format due to the spotty support (not a widely used format). I am not familiar with the LVDS and backlight controls on the board however. I would probably suggest to check how much power your display requires- your backlight connector might not supply enough power.
     
  5. xgekox

    xgekox

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    Jun 20, 2017 at 6:56 PM #5
    xgekox

    xgekox

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    I've the same motherboard but I' ve decided to turn on a external lcd controller board because I don't understand what I connect the lvds.
    I Wait any reply like you
     
  6. Duk3

    Duk3

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    Jun 28, 2017 at 11:28 AM #6
    Duk3

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  7. xgekox

    xgekox

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    Jun 29, 2017 at 7:04 AM #7
    xgekox

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    But for panel power how do you do it?
     
  8. Duk3

    Duk3

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    Jun 29, 2017 at 1:42 PM #8
    Duk3

    Duk3

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    i think i will use a self made custom cable for the first test.
     

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