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Asus x455lj ver 3.1 green led no video internal and external

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    Asus x455lj ver 3.1 green led no video internal and external

    ASUS X455LJ VER 3.1 have this laptop for 2 weeks now.. can't figure out the problem..
    no bios cell. power from internal battery.. no memory module, memory is built in..battery is built in. strip the unit in bare minimum.


    symptoms..

    1. when power is inserted the green and orange led lit..hdd led also lit laptop reading the hdd. power button long press turn off the laptop
    2. no video internal and external.
    3 cpu getting hot but normal temperature fan spins when its hot.
    4. all voltages are present. 1v, 3.3v 5v. 12v 1.35v, 1.8v, all coils have voltages. bios ic vcc 3.3v

    what i've done..
    1. flash the bios with all the bios bin that i can found on the net both for X455LJ and LF
    2. clean the whole motherboard with alcohol
    3. can't program the ec.. dont have programmer for it.

    what i discover
    1. this unit is using bios bin for X455LF that is why bios bin that i downloaded for X455LJ is not working.

    any suggestion guys... thanks in advance..
    Never stop LEARNING because life never stops TEACHING!

    #2
    Re: Asus x455lj ver 3.1 green led no video internal and external

    check ram circuit thoroughly like dramrst,sda/scl etc.

    Comment


      #3
      Re: Asus x455lj ver 3.1 green led no video internal and external

      thanks i surely do..how can i disable the onboard memory. thanks again. no schematic is available..
      Never stop LEARNING because life never stops TEACHING!

      Comment


        #4
        Re: Asus x455lj ver 3.1 green led no video internal and external

        already disable the built in memory and placed a known good memory module no avail .. still the same symptoms..
        Never stop LEARNING because life never stops TEACHING!

        Comment


          #5
          Re: Asus x455lj ver 3.1 green led no video internal and external

          any suggestion..
          Never stop LEARNING because life never stops TEACHING!

          Comment


            #6
            Re: Asus x455lj ver 3.1 green led no video internal and external

            Trace all major reset and enable signals. Use board schematics with similar controllers to find them. The board initialization process is a tree, and you need to find a point on that tree at which it fails.

            Comment


              #7
              Re: Asus x455lj ver 3.1 green led no video internal and external

              schematics is not available only board view..
              Never stop LEARNING because life never stops TEACHING!

              Comment


                #8
                Re: Asus x455lj ver 3.1 green led no video internal and external

                correct me if im wrong i placed the dimm sel0 and dimm sel1 to ground and dimm sel2 to 3v according to x455lj board view to enable the external dimm.

                what to check any suggestion guys.. im lost. here.. need help
                Never stop LEARNING because life never stops TEACHING!

                Comment


                  #9
                  Re: Asus x455lj ver 3.1 green led no video internal and external

                  Originally posted by mcplslg123 View Post
                  check ram circuit thoroughly like dramrst,sda/scl etc.
                  check that with the help of board view thanks... need to work my mind using this board view..
                  Never stop LEARNING because life never stops TEACHING!

                  Comment


                    #10
                    Re: Asus x455lj ver 3.1 green led no video internal and external

                    Since you are using external ram, you can very easily measure voltage with any other schematic with same memory specs like ddr3/ddr4. What is the consumption on your dc supply when laptop is turned on-01. With Ram, 02. Without ram??

                    Comment


                      #11
                      Re: Asus x455lj ver 3.1 green led no video internal and external

                      my bad .. im trying to revive this unit with a regular ddr3 i forgot this unit is using 1.35v to power the ram.. ill first purchase a ddr3L memory and see how it goes...if still the symptom persisted ill follow your suggestion mcplslg123 thanks very much for your patience in helping me... truly appreciate it...
                      Never stop LEARNING because life never stops TEACHING!

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