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Dell Latitude D620 power and screen issue

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    Dell Latitude D620 power and screen issue

    Hi,

    I want this (~2006) laptop to live forever, but it is falling apart
    It has a better screen and equal computing power to my wife's 7 year younger laptop (albeit at several times the powerconsumption) and it runs essential car-readout software that needs XP, so I see no need to replace it unless absolutely, unequivocally necessary.

    Two issues:

    Screen is no longer working. It could initially get it to work by switching between internal and external screen after it finished booting (this is one of the reasons I don't think it is a simple CFL or whatchamacallit issue, I also see no image on the screen whatsoever with flashlight or under different angles). But now it does not even show up in e.g. NVIDIA software program to set the resolution (1440x900 14"). This is something that baffles me with my limited knowledge: I did not 'remove' it in the bios or anything, so what would it make it disappear from the screen selection menu or make the computer not 'know' it's there? It works fine with an external display (NVidia Quadra NVS 110M graphics card)

    Second issue:
    It won't turn on properly with any of my Dell powersupplies (3 laptopsupplies from ~60 to ~100W and one 230V~ powered docking station all give the same result). Maybe one in ten tries makes it start up normally instead of the LED's lighting up shortly and it then powering down again. If I hear sound from the DVD drive (head moving or spinning up), then I know it will start normally (and removing the DVDRW completely does not change the startup chance). If I do't hear this sound after a second or two, then I know it will power down again.
    If I try it on batterypower alone without the powersupply plugged in, it will work 2 out of 3 times!!!

    The latter made me think of a bad powercap somewhere and made me post it here.

    Any thoughts, advice, etc are welcomed!
    Last edited by r-p; 09-03-2015, 02:05 AM.

    #2
    Re: Dell Latitude D620 power and screen issue

    You have a failing nvidia GPU. Your model is equipped with a nvidia chip of the bad lots they made between 2005 and the end of 2008.

    Long-term stability is only possible by replacing the graphics chip with a new one, made in 2009 or 2010.
    Originally posted by PeteS in CA
    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
    A working TV? How boring!

    Comment


      #3
      Re: Dell Latitude D620 power and screen issue

      Originally posted by Th3_uN1Qu3 View Post
      You have a failing nvidia GPU. Your model is equipped with a nvidia chip of the bad lots they made between 2005 and the end of 2008.

      Long-term stability is only possible by replacing the graphics chip with a new one, made in 2009 or 2010.
      yeap +1...

      Comment


        #4
        Re: Dell Latitude D620 power and screen issue

        Thanks guys!!!

        And sorry to question your expertise, but this would positively still be the case even though the VGA-output to the external screen works just fine?

        It is really a chip issue and not a reflowing issue?

        In this link (found through your info on the chip being to blame) a self proclaimed repair technician claims a failing chipset would also affect the VGA output and the link to the NVIDIA settlement is broken... So any links with more info are appreciated, along with any info on options (like is there a minute chance any other card will fit?)
        Last edited by r-p; 09-08-2015, 12:42 PM.

        Comment


          #5
          Re: Dell Latitude D620 power and screen issue

          http://en.community.dell.com/dell-bl...ty-enhancement

          Comment


            #6
            Re: Dell Latitude D620 power and screen issue

            There are many failure modes of the nvidia chips, depending which of the internal bumps disconnect. I have seen them output on VGA but not on internal many times.

            Feel free to reflow it, but the problem will come back in a few months.
            Originally posted by PeteS in CA
            Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
            A working TV? How boring!

            Comment

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