Acer Travelmate P248-m Series Power on Problem

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  • vhin02
    Member
    • Aug 2020
    • 13
    • Philippines

    #1

    Acer Travelmate P248-m Series Power on Problem

    Hey guys, hope someone could help me in troubleshooting this laptop. It seems that it has a power and turns on with no output then turns off after few seconds. I already tried to re-flash the bios hope that it would be the problem. I guess I need help with this matter. thanks folks.
  • emestee
    Badcaps Veteran
    • Dec 2019
    • 228
    • Bulgaria

    #2
    Re: Acer Travelmate P248-m Series Power on Problem

    Before anything else, have you tested the CMOS battery?

    Comment

    • vhin02
      Member
      • Aug 2020
      • 13
      • Philippines

      #3
      Re: Acer Travelmate P248-m Series Power on Problem

      not yet sir. should I disconnect it first?

      Comment

      • vhin02
        Member
        • Aug 2020
        • 13
        • Philippines

        #4
        Re: Acer Travelmate P248-m Series Power on Problem

        It has 0.06 volts

        Comment

        • stingerchamp
          Badcaps Veteran
          • Sep 2020
          • 425
          • Pakistan

          #5
          Re: Acer Travelmate P248-m Series Power on Problem

          CMOS battery or rtc cell should be above 2.8 voltage

          Replace it , check outside voltage at CMOS cell

          Without CMOS battery laptop will restart automatically for three times and fourth will boot
          Last edited by stingerchamp; 12-09-2020, 10:45 AM.

          Comment

          • vhin02
            Member
            • Aug 2020
            • 13
            • Philippines

            #6
            Re: Acer Travelmate P248-m Series Power on Problem

            ok thanks. i'll try this one

            Comment

            • vhin02
              Member
              • Aug 2020
              • 13
              • Philippines

              #7
              Re: Acer Travelmate P248-m Series Power on Problem

              I tried to remove the CMOS battery and replaced it but still doesn't work. maybe there's a different cause of it?

              Comment

              • stingerchamp
                Badcaps Veteran
                • Sep 2020
                • 425
                • Pakistan

                #8
                Re: Acer Travelmate P248-m Series Power on Problem

                When it turns on fan spins?

                Share schematic

                Check frequencylevel at crystal oscillator using
                oscilloscope or DSO

                Confirm rtc section rtc_rst# and secondary srtc_rst#

                Comment

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