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Acer Motherboard AM1640 and AM5640

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    #1

    Acer Motherboard AM1640 and AM5640

    Hi All ,

    I am new in this forum and new in recapping motherboard . I have 4 pcs of the same motherboard and all 4 have the same problem it dont have video . I test with video card in PCIE not work , check memory and PSU nothing it is possible it a capacitor it dead . I check the capacitor in the board and it like to not have burn . Do you have idea what it can do that . When i remove the 2 memory dimm it dont have bip or something . Thanks for your help and have a good day
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    #2
    Re: Acer Motherboard AM1640 and AM5640

    Did you buy them as non working motherboards?
    Did you try without a videocard - just using onboard graphics.
    Does the fan start - does the hard disk start.
    Do you get any led lights?
    Did the pc work with a good motherboard?
    Have you tried the memory in another machine?
    Cleaned the memory slots and pins on the memory stick?
    Last edited by selldoor; 06-13-2012, 07:07 AM.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

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      #3
      Re: Acer Motherboard AM1640 and AM5640

      Hi

      For reply to your question

      Did you buy them as non working motherboards?
      It all 4 computer that customer have for repair and i change the board for new one it already not working .

      Did you try without a videocard - just using onboard graphics.
      It not work with onboard and PCIE graphic card

      Does the fan start - does the hard disk start.
      The cpu start and hard drive too but no post and no bip

      Do you get any led lights?
      Just the power blue light

      Did the pc work with a good motherboard?
      Yes it work with new board like asus 775 with same cpu and memory and hdd

      Have you tried the memory in another machine?
      Yes and work

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        #4
        Re: Acer Motherboard AM1640 and AM5640

        Search is your friend ...

        https://www.badcaps.net/forum/showthread.php?t=16609

        And yes, the motherboard still works today.
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        We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

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          #5
          Re: Acer Motherboard AM1640 and AM5640

          _Don't_ reflow these chips, it is a waste of time.

          Let me explain why...

          Normally, what you try to achieve with a reflow is to bond the leads of the chip to the pad on the board... What people don't realize, is that what they are really accomplishing with these nVidia chip reflows is the re-bonding of the *internal* pads from the core to the substrate. They're seperating because nVidia used an inappropriate combination of solder alloy for the substrate and core pads.

          Even "re-balling" will never make these chips completely reliable.

          If you reflow, you're only buying yourself some more time.
          "We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them."

          -Leonid Brezhnev (On the Yom Kippur War)

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