Macbook pro 13"Duo core no display

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  • NConstantinou
    Badcaps Veteran
    • May 2017
    • 326
    • Cyprus

    #1

    Macbook pro 13"Duo core no display

    Happy New Year


    the processor is 2.26MHz core 2 Duo 13".
    On SMC ic is written 3089 or 3039 and 340D.
    This board i purchased from ebay and unfortunately the seller disappeared therefor i can not contact for more info.
    the board when was received supposed to be a working one but it was defective and i fixed it.
    I used schematic macbook pro A1278 820-2530 that was more near to board.
    So i went thru the RAILS test and all voltages are there. the only difference i have is PPVCOPE_S0_CPU i got 1.08v and on schematic says 1.5v.
    That is why i said it is a bios problem.
    do you have any suggestions.

    There is one IC U9000 pin1 is LVDS_IG_PANEL. there i have .2v and sometimes .5v but there is no short. pins 2&3 have 3.3v.
    tracing pin 1 goes to a resistor which is 0v ( measure resistance is ok) and
    then goes to graphics ic. Pin 1 should be 3.3v.
    can i fet from somewhere!

    Thanks
    Last edited by NConstantinou; 01-01-2023, 04:24 AM.

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