acer aspire m3100 motherboard

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  • redrooster
    Senior Member
    • May 2011
    • 114
    • Australia

    #1

    acer aspire m3100 motherboard

    I'm putting this computer together from bits and pieces and alls gone well except for some voltages on the motherboard -12.00v is -4.67v and -5.00v is -7.14v ? all the capacitors look alright they aren't bulging or anything it seems strange that its only the two negative voltages. I took the power supply out and it measured ok neg 12v is -11.67v and neg-5v is -4.67v. All the positives +12v, +5v ect.. are spot on? Where should I begin to look for the problem do you think? Would it be capacitors? I used speccy and cuipd computer spec programs to get the voltages, they where both the same!
    HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.
  • Uranium-235
    Comrade Glimmer
    • Aug 2007
    • 5042
    • US

    #2
    Re: acer aspire m3100 motherboard

    sometimes those voltages aren't accurate. is it giving you any troubles?
    Cap Datasheet Depot: http://www.paullinebarger.net/DS/
    ^If you have datasheets not listed PM me

    Comment

    • redrooster
      Senior Member
      • May 2011
      • 114
      • Australia

      #3
      Re: acer aspire m3100 motherboard

      Thankyou Uranium No it doesn't appear to be causing problems,so thats good news.Bloody annoying though.
      HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.

      Comment

      • seanc
        Badcaps Legend
        • Nov 2008
        • 1319

        #4
        Re: acer aspire m3100 motherboard

        How are you checking the voltages?
        Most software you can run from Windows gets it wrong.

        Comment

        • redrooster
          Senior Member
          • May 2011
          • 114
          • Australia

          #5
          Re: acer aspire m3100 motherboard

          I should qualify that! Its OK when its booted up and going, its just getting it to boot up! When it is causing problems by not booting I can unplug and replug the sata cable on the motherboard and check all the connections and then most times it will boot? Thats why I thought it may be a cap making it go intermittent.
          HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.

          Comment

          • redrooster
            Senior Member
            • May 2011
            • 114
            • Australia

            #6
            Re: acer aspire m3100 motherboard

            Originally posted by seanc
            How are you checking the voltages?
            Most software you can run from Windows gets it wrong.
            I used speccy and cpuid. Both of them had the same wrong readings.
            HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.

            Comment

            • seanc
              Badcaps Legend
              • Nov 2008
              • 1319

              #7
              Re: acer aspire m3100 motherboard

              Crack out the multimeter and measure from the back of the board.
              I'd be amazed if such a new PC even use -5 or -12.

              Comment

              • redrooster
                Senior Member
                • May 2011
                • 114
                • Australia

                #8
                Re: acer aspire m3100 motherboard

                Originally posted by seanc
                Crack out the multimeter and measure from the back of the board.
                I'd be amazed if such a new PC even use -5 or -12.
                where abouts on the back of the board do you mean?
                HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.

                Comment

                • seanc
                  Badcaps Legend
                  • Nov 2008
                  • 1319

                  #9
                  Re: acer aspire m3100 motherboard

                  The ATX power connector.
                  http://www.smpspowersupply.com/connector_atx_pinout.GIF

                  If you don't have a cable in place of the blue or white on that picture, don't bother.

                  Comment

                  • redrooster
                    Senior Member
                    • May 2011
                    • 114
                    • Australia

                    #10
                    Re: acer aspire m3100 motherboard

                    Originally posted by seanc
                    The ATX power connector.
                    http://www.smpspowersupply.com/connector_atx_pinout.GIF

                    If you don't have a cable in place of the blue or white on that picture, don't bother.
                    Oh OK I just had a look at the original power supply and it doesn't have those wires for negative voltage. So its nothing to worry about then. Ill disable them.
                    HP P6-2203a desktop,AMD CPU A8-5500 with Radeon HD7560D,3.20Ghz. Radeon HD 6670.8Gb Ram.2TB HDD. WIN 10 64 bit O/S.

                    Comment

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