Clevo W251ESMB no DD_ON thus no VDD5.

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  • f-bone
    Senior Member
    • May 2013
    • 96
    • Greece
    #1

    Clevo W251ESMB no DD_ON thus no VDD5.

    Hi guys,

    I got this dead Clevo which only measures VDD3 but is missing VDD5.

    There is no DD_ON signal to enable VDD5 but if I lift the corresponding pin from ITE8518E and force DD_ON then VDD5 appears.

    I reflashed the BIOS and EC and also replaced ITE8515E. No change.

    Any ideas where I should look next?

    I am using schematics for W253 as there is not exact match available.

    Thank you guys.
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    • f-bone
      Senior Member
      • May 2013
      • 96
      • Greece
      #2
      Re: Clevo W251ESMB no DD_ON thus no VDD5.

      it was the on-off button, DD_ON asserts after the button is pressed. went straight to I/O and shorted SW# pin to ground -> motherboard turned on.

      please close thread

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