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Thread: Could my DSATX be doing this?

  1. #1
    Newbie Master X's Avatar
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    Could my DSATX be doing this?

    Ok, I posted the long version here:

    Killed 2 mobos in less than 2 weeks!!

    The short version: I seem to have killed two mobos with in a matter of a couple weeks from each other. I am unsure of what could be killing them. I know everything is grounded as it should be and nothing is shorting. The ds-atx is showing normal operation but im wondering if there could have been something that happened, maybe a short on it itself or something that could be causing it to be sending the wrong voltages to the mobo.

    I'm looking for some info preferrably from zootjeff on how i can check this. I can't afford to hook up another mobo to this and have it fail on me as well. I have never had a mobo fail on me that quickly before.

    jeff, if i need to i am more then happy to send it to you to check it out. I just need to be sure and it fixed if need be. Been without the carpc going on a month now.
    For more info on the carpc go here

  2. #2
    Newbie Master X's Avatar
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    Ok, I was reading up on the manual and it looks like the dsatx has safeguards from doing this type of thing to the motherboards in which it should be entering a fault state if it was my psu.

    Anyone know if it is at all still possible to be getting incorrect current/voltages coming out of that psu that its not detecting?
    For more info on the carpc go here

  3. #3
    Neither darque nor pervert DarquePervert's Avatar
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    You want the current coming out of the DSATX?
    If you have a brainstem, you could use it to tel you the outgoing voltages on the 12v, 5v and 3.3v rails of the ATX connector.
    You could use a multimeter to check these for accuracy pretty simply, I think. You'd have to look up the pinout for the atx connector, short a couple of pins, and measure the lines you need to measure.

    First of all, what is your indication that the mobo is fried?
    Have you tested teh motherboards using a regular ATX supply inside? Do they boot up, or do anything at all?

    Were the two motherboards the same make/model? Are/were they truly ATX compliant, not some proprietary wiring? (some Dell and Compaq models use an 20-pin ATX conector, but are wired differently, for example)
    Have you looked in the FAQ yet?
    How about the Wiki?



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  4. #4
    Newbie Master X's Avatar
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    Yes, I checked it with another power supply, yes i checked it with another processor, yes i checked for any diagnostic beeps at all and there was no indication of any. I've been working with computers for while, im pretty confident that its the motherboard. No they are not the same brand. I would have gotten the same one but it was discontinued. Yes, all my wiring in the car is right, it worked for 3 months before i upgraded it and 4 months after.

    It is not that the mobo wont turn on at all, the fans come on but does not even START posting. No diagnostic beeps whatsoever as I stated before so yes, it is a true atx compatible board, they don't sell anything else on newegg.
    For more info on the carpc go here

  5. #5
    FLAC
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    One thing you can try is testing out the DSATX by it's self without a motherboard. If you short the green wire to a black wire on the 20 pin connector, with ACC high, you should get a solid red light on the DSATX. Then you can test all the outputs of the DSATX if you don't have a brain stem.

    The DSATX is pretty fool proof as far as blowing motherboards, It will turn off and flash 5 times before it melts anything down, thats not to say that you didn't short 12 volts to something somewhere that is only rated for 5 or 3.3. I need more info to be any more help..


    Jeff
    MPEGBOX - Plexiglass Computer
    www.mpegbox.com

  6. #6
    Newbie Master X's Avatar
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    How exactly could I check over voltage in that aspect?
    For more info on the carpc go here

  7. #7
    Neither darque nor pervert DarquePervert's Avatar
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    Short pins 13 & 14 on the ATX power connector. This will fool the DSATX (or any other ATX PSU) into thinking it is in its ON state.
    then use your multimeter to verify the output voltages from teh atx connector.
    Look up a pinout for the 90-pin ATX connector to determine what pins shlould be putting out what voltage.

    Another suggestion, if it's possible...
    COnnect to the brainstem using a differet computer, like a laptop. See if you can control the brainstem and startup/shutdown teh PC that way.
    Have you looked in the FAQ yet?
    How about the Wiki?



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  8. #8
    Newbie Master X's Avatar
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    Looks like I'll have to do method #1 as I don't have a brainstem.
    For more info on the carpc go here

  9. #9
    Newbie
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    My DS-ATX killed two motherboards as well. I checked voltages and it turned out that there were no negative voltages coming out of the DS-ATX. I am guessing this is why the mobos were dying. No idea why the DS-ATX failed tho... any ideas here are welcome.

  10. #10
    xgc
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    Hi Master X, dont know if you have tried this either. Since the motherboard is powering up I have found sometimes the onboard video might have went bad, if you have a video card you can throw in there and try that.

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