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Thread: Powering up carputer outside of car

  1. #1
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    Powering up carputer outside of car

    Yes I have read the FAQ.

    http://www.mp3car.com/vbulletin/advf...iew&advfaqid=4



    My question is can I just plug up a desktop PSUs 24pin harness into my carputer's 24pin plug on the mother board?

    The mobo is a Jetway Hybrid with VIA C7. I don't need to check my M2-ATX or shut downs. I know they work already. I just need to have it powered up to install a fresh OS and software. Will that method above work?

  2. #2
    Fusion Brain Creator 2k1Toaster's Avatar
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    Of course... Why would it not?

    A carputer/CarPC is a regular computer in a car environment. Of course make sure you plug it in and unplug the M2, dont use a Y adapter or anything of the sort (they do exist, but for what reason I have no idea...)
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  3. #3
    Neither darque nor pervert DarquePervert's Avatar
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    The idea behind wiring it up to your DC-DC PSU is to test that piece, as well.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  4. #4
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    Well I'm on my second mobo cause I fried the first one so I wanted to be sure this time around. Haha

  5. #5
    Fusion Brain Creator 2k1Toaster's Avatar
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    How did you fry the other one? It is not normal, so before you hook anything up perhaps we should find out why they other one let out the magic smoke...
    Fusion Brain Version 6 Released!
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  6. #6
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    Because I hooked up the output power to a power source (this was in my car btw not with the desktop psu)...I replaced the mobo and the M2-ATX still works fine. Everything works in my car just fine.

    I plugged up the mobo to my desktop's PSU and it's not coming on. A little green LED on the mobo comes on, but nothing else. Of course I disconnected the M2-ATX from the mobo and disconnected a jumper wire going from the M2-ATX to the mobo. Am I doing something wrong?

  7. #7
    FLAC
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    Did you attach a power button to the motherboard and push it?
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  8. #8
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    Quote Originally Posted by PaulF View Post
    Did you attach a power button to the motherboard and push it?
    No. Where would I attach it to? I'm assuming that's where the jumper wire coming from the M2-ATX that says "switch" on it comes into play...

  9. #9
    FLAC
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    And how did you expect to turn on a computer without a power button?

    I take it you've never built a PC before?

    Having fried a motherboard, not understanding the 24 pin connector, and not recognizing the power button issue, at least to me, is adequate evidence that you may not be ready to build a car pc just yet and I strongly recommend you do some serious reading on PC building as well as automotive electrical systems and DC electric in general. Knowledge is power here. Unless, of course, you have money to blow, and don't care about starting fires, damaging your car's battery and electrical system, or having your car stall while driving on a highway due to improper wiring.

    That said, on the motherboard somewhere there is a set of pins which usually connect to different things typically located on a computer case, such as the hard drive activity light, the power light, the power button, the diagnostic speaker, and the reset button, maybe even a few others too. Find this by using your motherboard manual.

    There will be a + and - pin for the power button. Pushing the power button on a computer is really just attaching these two pins to each other while the button is being held. So if you bridge that gap with something conductive, the pc will turn on assuming everything else is properly wired.

    As a no0b, other things to look out for would be any 4 pin power connectors the mobo might need.

    Once you boot the thing we'll need to have another conversation about properly using it with the m2-atx.
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  10. #10
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    By no means am I an expert. I wouldn't even say I am at an intermediate level when it comes to PC building, which is why I'm on this forum. Though I've fried a mobo, I'm willing to learn as I go. There is no better teacher than experience, right? I do have some general knowledge in DC electric, and whatever is going into my car will be grounded, fused, soldered, and connected properly. I will be testing out the mobo and PSU again later this afternoon. Will check back on progress. Thanks for the help, by the way!

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