Question about Dynex 400-Watt ATX CPU Power Supply

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I have an Acer Apire AX1700-U3700A (E2220). The power supply went bad and I am trying to replace it with a Dynex DX-400WPS. I know that the size is different and doesn't fit in aspire's box (this is no big deal for me). I just need the computer to work so I can access some of the programs and data. Thanks

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  • coloradoseeg Aug 31, 2010

    Thank you. Those are some great videos. I should have explained a little more, however. I plugged everything in and nothing happens. Well, I do see a flicker of light on the PC when I turned on the new power supply. However, the computer does not turn on.

  • coloradoseeg Aug 31, 2010


    So if the Hard drive was damaged that would keep the computer from turning on? Is there anyway to test if the hard drive is working or not? Thanks


  • coloradoseeg Aug 31, 2010

    Yes and no. I was hoping that I had just installed the power supply incorrectly, but since my motherboard was probably damaged as well, there was no good solution. Leetheduece was very helpful, though. THanks



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Then all you need to do is replace the same connections with the connections that are currently plugged in and then plug in the hard drive, dvd drive power cables as well, just look at the plug you disconnect and then plug in that cable with the new power supply you can have the power supply sitting outside of the computer it doesn't really matter just make sure you all the power cords plugged in including their should be small one for the processor fan.
here are a couple videos that should help you;

Thank you,

Posted on Aug 31, 2010

  • Lee A.
    Lee A. Aug 31, 2010

    Ok, well when your power supply "went bad" are you sure there weren't more issues with the computer? I would suggest if you need to get the data off, to just remove the hard drive and either install it in another computer and then transfer the data to a thumb drive, or get an external hard drive hook up and you can then plug the hard drive into usb through that transfer cable and then pull the data off the drive. It sounds like there is an issue with the motherboard itself on your acer. Here is a link to an example of hard drive to USB transfer cable:

  • Lee A.
    Lee A. Aug 31, 2010

    No, I believe the problem is with the motherboard not the hard drive. Hopefully the hard drive should be fine, and shouldn't damage a computer if you installed it internally into it. Your other option is the external cable I showed you.
    Thank you,



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