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Thread: Cutting out over bumps

  1. #1
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    Cutting out over bumps

    It seems that my newly installed system is turning off over bumps. I have my Xenarc LCD powered from my PSU and it cuts off as well, and the PC always starts right back up (not on its own, I hit the power button).

    So far Ive determined this much:

    What ever is causing it is either interrupting the power to the power suppy. or making its protection circuit trip (as in grounding the +12v). no fuses are poping when this happened.

    Today I put a piece of Cardboard under the mobo to make sure its not touching the case. I will pick up some plastic washers tonight.

    Here's the funny thing-
    I cant duplicate the problem unelss Im draving. I can physically shake the wiring, the PC case, pound on the inverter, and it still works fine.

    I guess if the plastic washers on the Mobo mounts dont help, I'll be off to wiggling individual components to see whats causing the problem. The CMOS battery already seems a bit loose. could this be part of the problem?

    oh yeah, the specs:

    Via Epia M1000
    150 watt AC-DC PSU
    125 watt continuous/300 watt peak inverter
    512k kingston ram
    8 gauge power and ground to distribution blocks, 4 gauge to trunk-mounted battery
    Maxtor 120gig HD
    Samsung full size DVD/CD-RW
    Win XP pro


    TIA- anything else I can check, or am I on the right path here.
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

  2. #2
    Maximum Bitrate binary.h4x's Avatar
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    check the battery cables and the fuse holder. My main fuse holder didn't hold the fuse tight enough and everytime I hit a bump, my carputer would restart.
    2007 Honda Fit Sport 1.5L SOHC-VTEC

  3. #3
    My Village Called 0l33l's Avatar
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    Do you have any expention cards? Those will cause the system to freeze over bumps. Reseat the ram and IDE cambles maybe.

  4. #4
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    Quote Originally Posted by binary.h4x
    check the battery cables and the fuse holder. My main fuse holder didn't hold the fuse tight enough and everytime I hit a bump, my carputer would restart.
    good one, I ve got a feeling about that one. I'l go check it now, Ive been unplugging it a lot lateley while connecting stuff.
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

  5. #5
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    Quote Originally Posted by 0l33l
    Do you have any expention cards? Those will cause the system to freeze over bumps. Reseat the ram and IDE cambles maybe.
    No cards, yet . But if it was a ram issue would it cause the 12v rail on the PSU to drop?

    I reseated the IDE cables already, but it would'nt be the first time I missed something at a glance.
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

  6. #6
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    similar problem

    im having the same problem. i think it may be the harddrive because my motherboard, power supply and screen stay on. Next time it happens im gonna check the harddrive and if thats the problem im gonna use some rubber shock mounts. Post if you find out more. thanks

  7. #7
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    Fuse connector was loose

    I wiggled the fuse holder, and I could hear the fuse tapping the contact as I wiggled it. Definiteley not good. I puhed it in farther and it tightened up. I will be off work in a few hours to see how it goes. A zip tie and some electrical tape can definitely fix this more permanently. Thanks again
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

  8. #8
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    Quote Originally Posted by tonyfirebird22
    im having the same problem. i think it may be the harddrive because my motherboard, power supply and screen stay on. Next time it happens im gonna check the harddrive and if thats the problem im gonna use some rubber shock mounts. Post if you find out more. thanks
    You may have a hard drive issue. My power supply was definitley cutting off, but coming back on as soon as I hit the power button on my dash that I have wired to the mobo header.
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

  9. #9
    Maximum Bitrate binary.h4x's Avatar
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    Try getting a pair of pliers and bending the actual holder to keep the fuse snug.
    2007 Honda Fit Sport 1.5L SOHC-VTEC

  10. #10
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    that fixed it, thanks again.
    Is this where the witty comment goes?
    97 Black pearl Mazda Miata MX-5 Carpc V2? maybee..

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