ASUS X553MA - Dead Embedded Controller IT8985E

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  • jbittoum
    New Member
    • Mar 2016
    • 7
    • france

    #1

    ASUS X553MA - Dead Embedded Controller IT8985E

    Hi everybody.
    my motherboard is dead , i look at the repair guide , and conclude the +3VA_EC was short to ground, remove all caps , and disconnected sub circuit did not solve the problem. The only thing that worked for removing the short was to remove U3001
    (Embedded Controller , ITE IT8985E.)

    I have no data sheet for IT8985E so
    My question is : If i buy a new IT8985E on aliexpress or eBay or whatever , Do I need to program / flash this chip ? Or does it execute its firmware from the external EEPROM U2801 (Winbond W25Q64FWSSIG 64MB) ?

    Thank U

    boardview+repair guide x553ma
  • jbittoum
    New Member
    • Mar 2016
    • 7
    • france

    #2
    Re: ASUS X553MA - Dead Embedded Controller IT8985E

    Nobody knows ? I may be in the wrong place ? how to move this post to "Troubleshooting Laptops, Portable, and Mobile Devices" instead of " Abit - Asus - Aopen" ?

    Comment

    • momaka
      master hoarder
      • May 2008
      • 12170
      • Bulgaria

      #3
      Re: ASUS X553MA - Dead Embedded Controller IT8985E

      Originally posted by jbittoum
      I have no data sheet for IT8985E so
      My question is : If i buy a new IT8985E on aliexpress or eBay or whatever , Do I need to program / flash this chip ? Or does it execute its firmware from the external EEPROM U2801 (Winbond W25Q64FWSSIG 64MB) ?
      Since I can't find any datasheet either, I would *guess* the IT8985E is most likely programmed by the external EEPROM U2801 when the board boots. At least that's how it is on desktop motherboards with LPC/SIO chips. Laptops are not that much more different from desktops, other than everything being more cramped and found in weird places.

      Either way, I'm pretty sure it won't hurt to try, unless those IT8985E chips are expensive. If they are cheap, maybe grab two, in case the first one is bad or ends up blowing again due to some fault on the mainboard.

      Originally posted by jbittoum
      how to move this post to "Troubleshooting Laptops, Portable, and Mobile Devices" instead of " Abit - Asus - Aopen" ?
      You can ask one of our moderators to move it for you. That would be:
      shovenose, c_hegge, Per Hansson, or Uranium-235.

      Comment

      • jbittoum
        New Member
        • Mar 2016
        • 7
        • france

        #4
        Re: ASUS X553MA - Dead Embedded Controller IT8985E

        ok thx u, I m going to wait for more info ... I bought a new motherboard but now it s time for the LCD to not work ... bad luck or LDC is dead , I just hope I have not broken the new motherboard.

        Comment

        • wacd
          Member
          • Jun 2014
          • 37
          • -

          #5
          Re: ASUS X553MA - Dead Embedded Controller IT8985E

          If there is an external spi flash chip for ec/kbc bios, then just replace the super io then everything should be fine.
          W25Q64FWSSIG is main bios, and its 8mb.
          There is no external spi flash for kbc-ec firmware on the board, then you need to program the new IO.
          Last edited by wacd; 04-03-2016, 07:31 AM.

          Comment

          • meritosari
            Senior Member
            • Oct 2010
            • 774
            • Indonesia

            #6
            Re: ASUS X553MA - Dead Embedded Controller IT8985E

            Also W25Q64FWSSIG has voltage only 1.8v, check your eeprom programmer already support it, if not then you need adapter to convert from 3.3v to 1.8v

            Comment

            • mahmoodgl
              Member
              • Feb 2015
              • 10
              • arak

              #7
              Re: ASUS X553MA - Dead Embedded Controller IT8985E

              gooooodwork

              Comment

              • surajkr3011
                New Member
                • Sep 2017
                • 3
                • india

                #8
                Re: ASUS X553MA - Dead Embedded Controller IT8985E

                Pls help me send me asus x553ma schematic

                Comment

                • polytek
                  Badcaps Veteran
                  • Dec 2013
                  • 496
                  • TUNISIA

                  #9
                  Re: ASUS X553MA - Dead Embedded Controller IT8985E

                  Originally posted by surajkr3011
                  Pls help me send me asus x553ma schematic
                  no sch for x553ma only bdv. you can use it to repair.

                  Comment

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