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Thread: Is my M2-ATX dead or what ?!?!

  1. #1
    Constant Bitrate jeep642's Avatar
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    Is my M2-ATX dead or what ?!?!

    I have an M2-ATX that I used with my VIA motherboard without problems.

    The motherboard fried... (I guess the fans were not big enough to keep it cool in its box)

    Now I want to use the M2-ATX to power all the things that I use in my carpc (Sirius, USB hub etc, etc...) and to power up the laptop I'm using now thanks to the ingenuous turn on module from Webmaster.

    Therefore it means I'm only using the M2 as an "intelligent" power supply without being connected to a motherboard.

    My problem is... it doesn't work... at all !!!.

    When I plug it to Ground, +12v, +12v IGN I don't get anything from any rails.

    Is it because it could be dead or because it's waiting from some sort of signal from the motherboard it should be connected to?
    If so, how to work around it?

    I searched the forums as well as the M2-ATX manual (let me rephrase that... leaflet.) and could'nt find anything remotely related to this kind of issue (which makes me sadly think that my M2 is fried as well !!!!!!!!!)

    cheers
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  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
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    Have you shorted pin 14 of the atx cable to ground to fool it into thinking there is an alive mobo there?
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  3. #3
    Constant Bitrate jeep642's Avatar
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    gonna try right now BRB
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  4. #4
    Fusion Brain Creator 2k1Toaster's Avatar
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    And by ground I mean a ground on the atx wire... shouldnt really matter at all, but it is cleaner this way since you can just use a paper clip
    Fusion Brain Version 6 Released!
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    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  5. #5
    Constant Bitrate jeep642's Avatar
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    Yep!!!

    That was it!

    Thanks very much for the tip.
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  6. #6
    Constant Bitrate jeep642's Avatar
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    Actually if you re still around I have a vaguely related question (barely....)

    The laptop I'm using needs 15v 5A.
    I tried (as I read on a thread) to power it with 12v off the ATX... which, as I expected, didn't work.

    On the other hand i measured that my battery delivers almost 14v.

    Do you think it's worth trying or there s a chance i'm gonna melt the laptop. (to be honest I'm rather good at this!!! I painfully learned that you HAVE to unplug and remove the battery before any surgery wit a laptop... LOL)
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  7. #7
    Fusion Brain Creator 2k1Toaster's Avatar
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    if you send unregulated car power to your laptop, it wont work when the car is off, and will melt it when on.

    Remember though 15v can be made with a 12v signal and a -3v signal. I dont know how many amps are on the -3.3v rail of the M2 though, or if it even has a -3v rail.
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  8. #8
    Constant Bitrate jeep642's Avatar
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    Good points...

    will investigate...

    thanks for the advice
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  9. #9
    Constant Bitrate jeep642's Avatar
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    I checked.

    I do have 12v (obviously) and also 3v available on the M2.

    Now I need to figure out how to add both to make it 15v.

    I know when it comes to batteries you need to mount them in series to add the voltage.

    But how do you do this with a M2?!?!?!?!?
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  10. #10
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by jeep642 View Post
    I checked.

    I do have 12v (obviously) and also 3v available on the M2.

    Now I need to figure out how to add both to make it 15v.

    I know when it comes to batteries you need to mount them in series to add the voltage.

    But how do you do this with a M2?!?!?!?!?
    Not 3v.

    -3v
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

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