GL553VW REV 2.0 No display

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  • kalilinux25
    Badcaps Legend
    • Mar 2018
    • 2084
    • ZAMBOANGA SIBUGAY

    #1

    GL553VW REV 2.0 No display

    L800 P_CHG_LX_30 - 8.38V
    L80-05 +VCCSA13 -1.053
    2 +1.35VO_VGA -0V
    1 +VCCGT 0V

    2 +1.2VO_DDR -1.215V
    1 VRM_PWRGD 3.3V

    hope someone can guide me if my processor is already dead?
    Attached Files
  • kalilinux25
    Badcaps Legend
    • Mar 2018
    • 2084
    • ZAMBOANGA SIBUGAY

    #2
    Re: GL553VW REV 2.0 No display

    Originally posted by kalilinux25
    L800 P_CHG_LX_30 - 8.38V
    L80-05 +VCCSA13 -1.053
    2 +1.35VO_VGA -0V
    1 +VCCGT 0V

    2 +1.2VO_DDR -1.215V
    1 VRM_PWRGD 3.3V

    hope someone can guide me if my processor is already dead?
    Im missing my voltage at DRAMRST
    also I dont have my 32khz

    Comment

    • kalilinux25
      Badcaps Legend
      • Mar 2018
      • 2084
      • ZAMBOANGA SIBUGAY

      #3
      Re: GL553VW REV 2.0 No display

      Me_ac_present- 3.2v
      suswarn#/suspwrdnack 0v
      pm_rsmrst# 3.2v
      pm_susc# -3.3v
      pm_susb# 3.3v
      sys_pwrok 3.2v

      Comment

      • kalilinux25
        Badcaps Legend
        • Mar 2018
        • 2084
        • ZAMBOANGA SIBUGAY

        #4
        Re: GL553VW REV 2.0 No display

        so hard to test some resistors beacuse I dont have access to a schematic

        Comment

        • kalilinux25
          Badcaps Legend
          • Mar 2018
          • 2084
          • ZAMBOANGA SIBUGAY

          #5
          Re: GL553VW REV 2.0 No display

          hope someone can help

          Comment

          • lapfix
            Badcaps Legend
            • Mar 2020
            • 2715
            • my workshop

            #6
            Re: GL553VW REV 2.0 No display

            Same here , but ...all voltage are present expect
            +VCCGT 0V

            and Dramrst and CPUdramrst

            Dramrst at pin 108 ram socket = 0.060v
            Trace this line until R203 470 OHM , resistance are ok and got 1.2v from one side and 0.060v from other ....No short to GND..

            Try official bios and one from SMDFlea but same issue.

            PLT-rst are present

            present too : all-sys pwrgood / vrm pwrgood / Pm- pwrok / vccgt pg / syspwr-ec .

            What to check else!!
            thank you

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #7
              Re: GL553VW REV 2.0 No display

              VCCGT at 0V is not something to bother. On many boards it doesnt rise(If you test with dso, you will get a pulse for a fraction of second). However, when dramrst# is pulled low, there is no question of VCCGT rising. Dramrst# is controlled by cpu and the resistor is fine as per your observation. Bios could be a factor but you have already ruled that out.

              So in my opinion you are staring at cpu fault.

              Comment

              • myth77
                Badcaps Veteran
                • Feb 2017
                • 380
                • Croatia

                #8
                Re: GL553VW REV 2.0 No display

                Boardview attached..with value of resistors. This boardview is a little strange...when you open it you have to flip board horizontally to show you the correct pins on board.
                Attached Files

                Comment

                • usyusy
                  Senior Member
                  • Sep 2021
                  • 171
                  • Pakistan

                  #9
                  Re: GL553VW REV 2.0 No display

                  under microscope, traces could also be checked, if they are missing on somewhere

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