Lenovo 320 NM-b241 memory issue.

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  • lapfix
    Badcaps Legend
    • Mar 2020
    • 2714
    • my workshop
    #1

    Lenovo 320 NM-b241 memory issue.

    NM-b241 don't Power on completely , just 0.160 amp .

    On board Ram

    After taken some measurements , followig the power sequence PG47 , i reach only step 7...didn't find anything about step 8...at step 9 SUSP# is 0v ( enable signal for many steps )

    i find too that PL501 is short to GND = 0.006 ohm ...so my suspecion go straight to this 4 little Samsung Semiconductor..

    When i open this jumper PJ507 (= +1.2V ) the short is not from PU500..the consumption go to 0.950 amp than the lap is off .

    So , i disable the ON BOARD RAM by shifting this 2 resistors :

    RC1634 to RC1631
    RC1635 to RC1632

    After Closing the jumber PJ507 the short still there.

    Don't want to remove this 4 little ram , is there anyway to confirm that the short is not from this 4 little ram !

    Thank you
    Attached Files
    Last edited by lapfix; 06-10-2022, 09:58 AM.
    Tags: None
    • lapfix
      Badcaps Legend
      • Mar 2020
      • 2714
      • my workshop
      #2
      Re: Lenovo 320 NM-b241 memory issue.

      Update : unfortunately it was the CPU.
      1.2v suplly both Ram and Cpu

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