Macbook Pro K24 power problem

Discussion in 'MacBook Pro' started by Umbie, Feb 23, 2015.

  1. Umbie macrumors newbie

    Feb 23, 2015
    I have a Macbook Pro 13 with a K24 board in it.
    The Macboko has a strange problem, it had some minor liquid damage, cleaned it and now when I connect the Magsafe the light starts green and then goes to orange (how it supposed to be)
    But I can't power the board, it won't respons to the power button/power pads
    SMC reset doesn't work

    What I did measure,
    G3Hot:3.45V (Ok)
    P5VS3_EN_L and P3V3S5_EN_L: always high
    SMC_RESET_L: 3.3V
    The SMC's XTAL is running
    CHGR_ACOK: +/- 3.3V, but seems a bit floating, when I touch a ground part and with the other hand the measuring pin the voltage gets lower, when I touch the 12V and the pin it gets higher (till 4 V)
    Does that mean the ISL6258A is dead (it does start charging) or is that pin always high resistive?
    What should I check?
    What could I do to at least get the board running?

    Thanks in advance.
  2. Umbie thread starter macrumors newbie

    Feb 23, 2015
    Ok, I have done some extra messurements and found out that PP3V3_S5_REG is 0V
    Measured arround U7200 and all conditions are right to turn it on, but there is nothing going to the FETs, so I ordered a new one, hopefully it solves the problem.

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