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Thread: New VoomPC-2 build not booting

  1. #1
    Newbie Marine4305's Avatar
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    New VoomPC-2 build not booting

    First off let me say hello and thank you in advance for any assistance that can be provided. For a little background I am a technical consultant so I'm pretty advanced on the troubleshooting side except for when it comes to cars.
    I have built an in-car pc for my 2007 Dodge Charger and had it professionally wired by Cartronics to avoid any mistakes on my end. I have the following setup below:

    Case: VoomPC-2 CarPC Enclosure
    GPS: BU-353 Weather-proof GPS Receiver (usb)
    PSU: M2-ATX 160W Intelligent DC-DC PSU
    MB: Intel D945GCLF Mini-ITX Motherboard with Integrated Atom Proc
    CD/DVD: Slim CD-R/CD-RW/DVD Rom with Slim Line Adapter
    HD: Samsung 80GB Sata HD
    RAM: 1GB DDR2 6400 Corsair Heat Sink
    Monitor: 10.4" TFT monitor touchscreen

    I have the system mounted under the passenger seat and I am unable to get the system to boot. I have checked to make sure that the motherboard is getting power and that the onswitch cable is connected properly. The led is connected to the psu as suggested by the instructions. Another thing I noticed is that I am unable to get power to my cdrom and harddrive.

    If anyone has any ideas whatsoever please let me know as Tech Support has not been able to get back to me at this time.
    We got the eagle from the Airforce,
    The anchor from the Navy,
    And the rope from the Army,
    And on the seventh day when God rested we overran his perimeter and have been protecting it ever since.

    Semper Fi

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
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    If you're unsure of yourself, you may want to head back to Cartronics to do some troubleshooting.
    A few questions:

    1 - How do you have the M2ATX wired up? The common configuration is constant 12v power (straight to the battery), ground and an ignition-controlled line. This third line senses the power state of the line to trigger startup & shutdown of the PC.

    2 - What gauge wires are you using for power and ground?

    3 - Have you (or your installer) confirmed the voltage you're getting on the 12v constant line and the ignition controlled line with key off & key on using a multimeter?

    4 - How are you certain that the motherboard is getting power? Did you measure the voltage at the 20-pin ATX connector with a multimeter?


    This is a reason I would not recommend having a shop install a vehicle PC unless they are knowledgable and/or experienced in installing PCs in vehicles. You can give them the wiring diagrams and say "install it like this", but unless they know how to troubleshoot a PC, you have no recourse other than to trust their installers.
    Add into that the time & money it will cost to work with them to troubleshoot, and you could EASILY have learned how to do this yourself.

    Before I got into this I had not installed anything more than a replacement headunit and speakers. Now I understand more about what's involved. With the help of some good informational/educational resources and some knowledgable friends, I'm pretty configent I can install darn near anything electrical in a vehicle.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  3. #3
    Maximum Bitrate Caelric's Avatar
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    Welcome to the carPC world, from a fellow Marine.

    DP covered all the advice I could give, except he missed the most important piece of advice: check the spelling in your .sig, you got something wrong.
    2005 Infiniti G35 6MT Coupe Black/Black
    Core Duo CarPC
    CarDomain page

  4. #4
    Newbie Marine4305's Avatar
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    Thanks Caelric for the heads up, guess I was typing to fast.

    Thank you as well DarquePervert for your advice. I have answered your questions below and added some extra background info:

    1 - How do you have the M2ATX wired up? The common configuration is constant 12v power (straight to the battery), ground and an ignition-controlled line. This third line senses the power state of the line to trigger startup & shutdown of the PC.
    I had them hook up the pc per the instructions that came with the psu which is ground and an ignition control line.

    2 - What gauge wires are you using for power and ground? I'm not sure of the guage wire that they used but the system game with a connection for power so they used that wiring type to setup the power.

    3 - Have you (or your installer) confirmed the voltage you're getting on the 12v constant line and the ignition controlled line with key off & key on using a multimeter? NO

    4 - How are you certain that the motherboard is getting power? Did you measure the voltage at the 20-pin ATX connector with a multimeter? I didn't measure the power but I did open the pc and hooked it up. Once connected I turned the ignition and watch the system powerup. I can the motherboard light showing power, and the led from the psu showing power as well. The Intel board comes with a cpu with fan and the fan is spinning.

    As a side note, I found a post where someone was researching this board a month before it was available for sell and mentioned that a 4pin connector would be needed with the ATX psu. Any ideas to this as Cartronics has experience installing for carpc's in my area and I'm pretty certain that its not the wiring but maybe something I missed in the setup of the pc.
    We got the eagle from the Airforce,
    The anchor from the Navy,
    And the rope from the Army,
    And on the seventh day when God rested we overran his perimeter and have been protecting it ever since.

    Semper Fi

  5. #5
    Newbie Marine4305's Avatar
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    New info

    http://www.intel.com/support/motherb...010254.htm#2x2

    I found this posting for this board which explains my problem. it explaines the following:

    System Does Not Boot up at First Integration

    2x2 or 2x4 Power Connector Not Plugged In
    If the power supply cable with the 2x2 connector or 2x4 connector (depending on your desktop board), is not plugged into the 12V processor core voltage connector located near the processor socket, the system will not boot up. You will see lights onboard and on the chassis front panel and the processor fan will spin, but nothing will appear on the monitor. See figures below for cable placement.

    I'm going to go with this and see if I can get it to work. At least the cable I need is only $1.73. Thanks again for your quick responses.
    We got the eagle from the Airforce,
    The anchor from the Navy,
    And the rope from the Army,
    And on the seventh day when God rested we overran his perimeter and have been protecting it ever since.

    Semper Fi

  6. #6
    Neither darque nor pervert DarquePervert's Avatar
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    Didn't think about the 12v power connector.
    Good catch. It's probably the source of your problem. If not, be prepared to do some electrical troubleshooting.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  7. #7
    Newbie Marine4305's Avatar
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    Thanks

    Yea it took me awhile to find it, but with that said I've decided to go a cheaper route and just use a laptop. All I have to do now is get someone from MP3car to contact me back so i can return everything.
    We got the eagle from the Airforce,
    The anchor from the Navy,
    And the rope from the Army,
    And on the seventh day when God rested we overran his perimeter and have been protecting it ever since.

    Semper Fi

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