MSI motherboard 16J91 have no bios pules

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  • Francisco.s
    Badcaps Veteran
    • Jan 2013
    • 686
    • Spain
    #1

    MSI motherboard 16J91 have no bios pules

    Hi, have a MSI motherboard 16J91 with no image and only consumes 22 mA when power on.

    There is no voltage at pin 8 of bios chip in stand-by, but as soon as I push the power button, pin 8 and all other pins of bios voltage rises to 3 volts, but no pulses are present.

    No voltage on PM_SLP_S5# or other PM_SLP.

    KB9028Q has been replaced and programmed without any issues, but pulses in bios still missing. (measured with dso)

    Can pch be blocking bios pulses?

    Thanks for your help.
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