Macbook 820-00840 short on PP3V3 LDO

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  • Slezi
    New Member
    • Sep 2020
    • 2
    • Poland
    #1

    Macbook 820-00840 short on PP3V3 LDO

    Hello,

    I got a problem, macbook was stuck on 5v 0.03A, i replaced CD3215 and i was back to 20V but stayed at 0.04A. A was checking voltages (eg P5V S4) and i after a while current was 200mA. After plug of and plug in the usb c it stucks again at 5V but 200mA... I stated from begining, and i measured PP3V3_UPC_XA_LDO - 1.2V. After disconnect the charger i checked resistance: PP3V3_UOC_XB_LDO - 8ohm PP3V3_UPC_XA_LDO 9 ohm, PPBUS_G3H about 800ohm. It means that CD3215 are dead again? Any other components to check before desoldering CD3215's?
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