Asus ROG Strix B550-E Gaming boardview needed

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  • abel2b
    Member
    • Mar 2009
    • 34
    #1

    Asus ROG Strix B550-E Gaming boardview needed

    Hi, I´m looking for B550-E schematic or board view, I need SIO and PCH must have standby voltages to boot or SIO power up sequence?

    Motherboard died after removing GPU for cleaning, after plugging all back, board is dead no lights, LED or Q-code nada!

    PSU is ok
    CPU tested on another board ok
    GPU tested on another board ok
    RAM also tested on another board ok.

    on PHD6000 header I have SKTOCC# (3V) ok, 3VSB_ATX ok, but I do not have 3VSB_SIO on pin 45 of SIO (NCT6798D)

    I have B550-Plus, B550M-Plus. B550-F boardviews and all have same SIO (NCT6798D) but very different board layout and minor component differences ...

    Any help would be apreciated...THX
    Tags: None
    • Herbs n spices
      Member
      • Jan 2021
      • 36
      • USA
      #2
      Usually that means you accidentally knocked off a part close to the edge of the board with the metal GPU bracket. Carefully inspect that area, or post a good photo of it. Once you find it, you can trace it back to a pin on the SIO either by eye or with a multimeter, then use the other boardviews to see what connects to that pin. It's probably the pin 45 you mentioned. The SIO usually controls the power button, so if it doesn't have power then you can't turn the board on. I don't have the boardview to offer, just my past experience, but I hope that helps.

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