Lenovo Ideapad Z500 - power LED for 6 seconds

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  • TheGiolly
    New Member
    • Aug 2014
    • 8
    • Italy
    #1

    Lenovo Ideapad Z500 - power LED for 6 seconds

    Hi, I have a Lenovo Ideapad Z500 with motherboard VIWZ1_Z2 LA-9061P.
    After pressing the power button, the power LED comes on for about 6 seconds and then shuts off.

    +5VALW, +3VALW, +5V_PCH, +3V_PCH and are all ok.
    I have missing +5VS, +3VS, +1.5VS and all the other main power rails due to the signal SUSP (generated by the EC KB9012QF-A3) stuck at GND.
    The signals SLP_S3#, SLP_S4# and SLP_S5# (from PCH to EC) are all stuck at GND too while SLP_SUS# (from PCH to EC) is at +3V.
    The signal RSMRST# (from EC to PCH) is at +2V.

    Could comeone please help me out to find the problem?
    Thanks in advance!
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