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Thread: Trouble-shooting a DOA carpc

  1. #1
    Join Date
    Sep 2004
    Falls Church, VA

    Trouble-shooting a DOA carpc

    Howdy, I purchased the carpc mentioned here: Car PC For Sale
    I received the package, it was excellently wrapped, and my god is it pretty! Problem is, it doesnt work...

    Symptom: No beeps or display, no keyboard lights illuminating

    Procedure: I simply connected a mouse, keyboard, monitor and power. When i flick the power switch on the power supply, nothing happens. When i press the power button, the system fans start up and the hard drive starts spinning. Thats as far as it goes. Nothing else happens

    What I've ruled out (in order):

    Ram - I tried reseating the single chip of ram. I tried putting it into the other slot. No change. I replaced the single chip with 2 known good. No change.

    PCI devices - removed

    ATI card - removed and tried on-board, no change, reinstalled

    Hard drive/IDE cable - I tried a different hard drive and cable. also tried the other channel. No change

    Processor - Cleaned the processor and swapped it for a known good. Processors work in secondary p4 machine, but no effect on the one having problems

    Power supply - swapped in a known good and no change.

    So that leaves the motherboard. Does anyone have any advice? The seller seems like a good guy, I just hope i wasn't sold something that is broken. Anyone know how to troubleshoot a PC CHips mini atx motherboard?

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
    Join Date
    Apr 2004
    If you're not getting any beeps whatsoever, then you're probably looking at something failed, probably motherboard. It could also be CPU. If it were RAM, you'd be getting a beep code and/or a POST at least.
    Was everything packaged in anti-static bags or foam? A static discharge could have damaged something.
    You're definitely looking at a hardware issue of some sort.

    I certainly hope you didn't get burned by the seller...
    Have you looked in the FAQ yet?
    How about the Wiki?

    Under normal circumstances, a signature would go here.

  3. #3
    Low Bitrate
    Join Date
    Jul 2004
    Indialantic, Fl
    What is your motherboard mounted on?
    -iBase MB870 mini-ITX/P4 1.8GHz/256MB/ATI Radeon 9100 IGB onboard video
    -Alpine MRV-F450 5 Channel Amplifier
    -Lilliput 7" VGA touchscreen

  4. #4
    Maximum Bitrate neon_eddy's Avatar
    Join Date
    Nov 2004
    Ham Lake, MN
    I've had this happen to me before.. make sure you don't have the CMSO CLear jumper set to clear.. or the password resset.. ..

    I've also had it happen and it be a board problem..
    try swapping out the CPU .. or just taking it out.. and look in the manual for jumers and what they do and check them over..

    Check out my web company Minneapolis Web Designer | MODx Web Design - Himmelberger Design

  5. #5
    Join Date
    Sep 2004
    Falls Church, VA
    Motherboard is mounted to the plexiglass case. Full PC in case was wrapped in plastic bubble wrap and surrounded by foam peanuts. The box it arrived in looked fine.

    I have not yet tried to clear the CMOS, but I will. I have swapped processors and determined it not to be the processor.

    I did notice the sticker on the cmos chip looked to be slightly warped. It almost looks like it got hot and "curled" up, but it could have been simply "pushed" when installing the processor heat sink. They are VERY close.

    Thanks for your help so far. I have not heard back from the original seller in a day or so (i've hounded him with about 5 e-mails a day, but he hasnt seen the last 3 yet). Hopefully when I get in touch with him, we can take care of things. The other equipment seems in top notch shape.

  6. #6
    Join Date
    Sep 2004
    Falls Church, VA
    Seller offered to replace the motherboard at his expense. Should be good to go.

  7. #7
    FLAC evandude's Avatar
    Join Date
    Mar 2005
    Not that this really helps any more, but both foam peanuts and plexiglass like to make static electricity. I'm sure you've had little bits of packing peanuts stick to things when you take them out of a box, and a classic science demonstration is rubbing a plexi/acrylic rod with a cloth to show how much static builds up. probably would have been a better idea if he had taken the electronics out and put them in a static bag outside of the plexi case.

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