Asus X441MAR Question

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  • kodox
    Badcaps Veteran
    • Jul 2017
    • 322
    • Indonesia
    #1

    Asus X441MAR Question

    this unit came yesterday with problem that it has no picture on lcd or external monitor (vga or hdmi) but still respond on power button, after checked all power rails is present, changing DDR4 ram module known good had a same result.

    checked dramrst# on pin 108 of ram slot, it only gave 0.6 volt without ram module installed, this board don't have onboard ram & no discrete vga chip installed. i can't tested dramrst# with ram installed because i don't have boardview where i can trace other test point for dramrst# and i don't know where to measure other signal.

    from a lot of info i get, flashing the bios will solve the problem, but i doubt because of dramrst# is missing or is it 0.6 volt on dramrst# of ddr4 sufficient since ddr4 only 1.2 volt and dramrst# signal pulled up to 1.2 volt rail?
    Tags: None
    • lapfix
      Badcaps Legend
      • Mar 2020
      • 2720
      • my workshop
      #2
      Re: Asus X441MAR Question

      I solve many no display lap with no dramrst present with flashing bios , so i advice you to post your old dump in the bios section and ask for clean me or repair bios

        Comment

        • sysaputra
          Member
          • Feb 2021
          • 10
          • Indonesia
          #3
          Re: Asus X441MAR Question

          Try flash with this file


          MOD Edit: Bios moved to "Bios Requests ONLY!" - https://www.badcaps.net/forum/showthread.php?p=1047992
          Last edited by SMDFlea; 05-24-2021, 03:01 PM.

            Comment

            • kodox
              Badcaps Veteran
              • Jul 2017
              • 322
              • Indonesia
              #4
              Re: Asus X441MAR Question

              Originally posted by lapfix
              I solve many no display lap with no dramrst present with flashing bios , so i advice you to post your old dump in the bios section and ask for clean me or repair bios
              hmmm....
              so, you think the content on bios chip will be read/write by/to the pch and ec without dramrst# present or even without ram installed?
              how do you make sure pch not faulty because of dramrst# absence?

              Originally posted by sysaputra
              Try flash with this file
              thank's, i'll try it soon as i confident it's only the bios corrupted

                Comment

                • kodox
                  Badcaps Veteran
                  • Jul 2017
                  • 322
                  • Indonesia
                  #5
                  Re: Asus X441MAR Question

                  UPDATE:

                  nothing's change after flashed the bios 6 times from different source


                  LESSON:

                  don't flash the bios when dramrst# signal is gone on SoC system and no boardview available to check other signals

                    Comment

                    • tomy78
                      Member
                      • Jul 2019
                      • 35
                      • Indonesia
                      #6
                      Re: Asus X441MAR Question

                      can you send me the boardview? i need the boardview

                        Comment

                        • SMDFlea
                          Super Moderator
                          • Jan 2018
                          • 20807
                          • UK
                          #7
                          Re: Asus X441MAR Question

                          Originally posted by tomy78
                          can you send me the boardview? i need the boardview
                          Post your request in the "Schematic requests ONLY!" section here -> https://www.badcaps.net/forum/forumdisplay.php?f=41
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                            Comment

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