x550vx fan not working

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  • trmrtts
    Member
    • Jan 2014
    • 38
    • turkey
    #1

    x550vx fan not working

    hi everybody
    i have x550vx main board.this board working ,have image but fan not working
    i tried this
    bios update
    changed ec

    and havent fan0_pwm voltage

    fan socket voltage
    fan0_pwm=0v
    fan0_tach=3v
    5vs_fan=5v

    I/O voltage
    31pin fan0_pwm=0 volt
    47 pin fan0_tach=3 volt

    and u5003 voltage
    cpu term u5003
    5pin=3.3v
    3pin cpu_therm=3.3v
    4 pin +3vs=3.3v
    1 pin=3.3v

    whats wrong
    Tags: None
    • Duranitron
      Badcaps Veteran
      • Jul 2014
      • 543
      • Philippines
      #2
      Re: x550vx fan not working

      is the laptop working fine? make sure to test the pin without the cpu fan..test the fan outside to confirm its working.. and make sure the cpu fan is not the one shorting the fan0_pwm to ground.. if not.. try back tracing.. the pwm signal is produced by the fan controller ic.. try to check that...
      Never stop LEARNING because life never stops TEACHING!

        Comment

        • trmrtts
          Member
          • Jan 2014
          • 38
          • turkey
          #3
          Re: x550vx fan not working

          laptop working,fan working outside with power supply

            Comment

            • Duranitron
              Badcaps Veteran
              • Jul 2014
              • 543
              • Philippines
              #4
              Re: x550vx fan not working

              try to hot wire it to keep the fan working unless you have a lot of time to trace it back why its not working,, follow the schematics... https://www.badcaps.net/forum/attach...3&d=1435773716
              Never stop LEARNING because life never stops TEACHING!

                Comment

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