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[SOLVED]820-2530 TS0P unable read error

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  • [SOLVED]820-2530 TS0P unable read error

    Hello everybody;

    I m working on A1278 2009 year. Fan noise and CPU usage %100 . When do ASD it shows TS0P unable read error.

    Tried;

    replaced track pad and cable
    replaced bluetooth and wifi cable with know good cable
    replaced SMC

    same status

    where can i check next step?

    thanks



  • #2
    Unplug airport cable. There is nothing else on this bus besides trackpad/ALS.
    If it still not working measure both data lines on diode mode.

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    • #3
      Thank you Duke I2C_ALS_SDA line is shorted ground in J3401 replaced connector and solved problem.

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