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820-3115 missing =PPVCORE_S0_CPU_REG

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  • 820-3115 missing =PPVCORE_S0_CPU_REG

    820-3115 missing =PPVCORE_S0_CPU_REG

    This is light liquid damage board. I check all coils and I only found missing PPVCORE at 0V

    I checked U7400 and I have

    CPUIMVP_VR_ON - 3.3V
    PP5V_S0_CPUIMVP_VCC - 5V

    What is next to check?

  • #2
    R7402/03 corrosion? Check value?

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    • #3
      150K and 180K
      No corrosion arround U7400

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      • #4
        Well that sucks cause now it can be anything. Corrosion under SMC/PCH corroded resistor or trace.

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        • #5
          whats the voltage on both the TON resistors duke asked you to check? check pin 1 and two of r7402/r7403

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