D945GCLF Atom ITX board looping on graphics driver.

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  • Wizard
    Badcaps Legend
    • Mar 2008
    • 2296
    #1

    D945GCLF Atom ITX board looping on graphics driver.

    This is Atom 1.6GHz CPU that sip 2W at full speed using D945 chipset.
    Latest bios and drivers versions.

    Without graphics driver I can use it normally with XP. With that driver installed, every time windows start to intialize the driver after desktop appears, it reboots itself.

    The intel INF driver got installed successfully with no issues.

    Also I have what I get is noise in the video (fine horizontal lines crawling up and I also have noise (using scope) in the Vcc for this D945 chipset. Filtered by two 1,000uF 10V and one smaller 220uF 10V, all GC Samxon caps. Other markings: X3A, temp rating of 105C There is H after this temp rating.

    This is one I consider unusual is it uses a LM358, (IPD)135N03L and 20T03GH
    LM358 pumps a sine wave (if using FET, should have been a square wave?) into these two power MOSFETs then thru this aforementioned 3 caps. No coil at all. What the hell?

    All other voltages from PSU, other switching regulators are quiet and working well.

    Cheers, Wizard
    Tags: None
    • Wizard
      Badcaps Legend
      • Mar 2008
      • 2296
      #2
      Re: D945GCLF Atom ITX board looping on graphics driver.

      Solved:

      And I was able to install with same video driver too.

      it was noisy PSU even had this PSU recapped myself. SIGH. Have to look into it and fix it again.

      Cheers, Wizard

        Comment

        • kc8adu
          Super Moderator
          • Nov 2003
          • 8832
          • U.S.A!
          #3
          Re: D945GCLF Atom ITX board looping on graphics driver.

          have been seeing a rash of bad samxon gd in nvidia/evga boards recently.

            Comment

            • Wizard
              Badcaps Legend
              • Mar 2008
              • 2296
              #4
              D945GCLF Atom ITX board update

              I finally had time to dive into the power supply again as I need it for another
              D945GCLF project to replace our ailing shop's server PC (Deskpro 500MHz PIII.)

              It was freaking perfect PWM waveforms on the -12 & -5 DC lines.
              I can't see why FSP used 100uF 25V pair crammed down there and COVERED with those burnt bread crumb glue. :P These two should be at least 470uF or more.

              Also hard to get my mind around that, what can regulators need these negative voltages? Early boards I would accept that but this no...Using LM358 IC to control pair of linear regulators for the D945 chipset. 22W. No switching neato stuff here. :P

              Cheers, Wizard

                Comment

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