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​[SOLVED]820-2327 - old board

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  • ​[SOLVED]820-2327 - old board

    No water damage, just stop work.

    PPCPUVTT_S0 - OK
    PPVCORE_S0_MCP - NO
    PP0V75_S0 - NO
    PP1V05_S0 - OK
    PP1V5_S0_R - NO
    PP1V5_S0 - NO
    PP1V8_S0 - OK
    PP5VRT_S0 - OK,
    PP3V3_S0 - OK
    PPBUS_G3H_CPU_ISNS - OK

    - The CPU/GPU get warm
    - No Light on the USB mouse
    - Have Green Light
    - THE FAN DONT WORKs, BUT I HAVE 5V PIN1
    - Short to Ground on L7400 34.2 ohm
    Last edited by menatwork; 10-01-2016, 02:42 PM.

  • #2
    Voltage on R7859?

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    • #3
      dukefawks I get 3.30V.
      Last edited by menatwork; 09-29-2016, 05:10 PM.

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      • #4
        Here we go again, then it is not possible to have any S0 voltages! Measurements are not making sense.......

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        • #5
          dukefawks I get 3.30v

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          • #6
            Now you do have 3V. What about the rest of those measurements, I cannot trust anything you tell me.

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            • #7
              dukefawks I Get 3.30v, not 0v. Do u have another question?

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              • #8
                This makes no sense. You can't have no 3v then 3v. And there is no short to ground when there's 34 ohms on a CPU vcore line. This just makes no sense.

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                • #9
                  larossmann Easy to find out my mistake.
                  When i check R7859, i plug the charger and i forgot to turn on. This board is not like i5/7. When dukefawks write back , i check again with the board ON.
                  I need explain what happen for you guys don't think i'm here just for waste your time.

                  Can we move forward?

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                  • #10
                    Ok, starting from scratch, which S0 rails are missing?

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                    • #11
                      Thanks larossmann and dukefawks.
                      I figure out. I just replaced L7500 and works fine.

                      Solved!

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