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Thread: carnetix 1290 + commell 671 weird supply probs - help !!!

  1. #1
    Join Date
    Feb 2004

    carnetix 1290 + commell 671 weird supply probs - help !!!

    having some weird probs with a carnetix 1290 and a commel v671 board...

    basically i think its a hardware prob with the regulator since it makes an static type ticking noise.. does anyone else get this ?

    I have tested the current draw on my board setup,, 2.5 - 3A under load, and 1.8A idle, so i know the 1290 has enough power, however the 1290 is iratic at powering it at best, if i use the rear i/o 4 pin power connector the board will not power up full stop, not even via front power connector, if i meter test the socket it is receiving 12V from the 1290. if i connect the 1290 to the internal P4 style 12V in, the board will power up, but not consistenly.

    if i use the original mains - 12V adapter that came with the board, it all works fine via the external connector.. weird huh

    wait, it gets better, if i hook the acpi power switch up to the 1290, the 1290 CANNOT automatically power up the board, even though the cables test ok at the MB end !!!, but if i kill the ignition line into the 1290, it goes into shutdown mode, and boots the board up.

    i also have a opus which boots the commell v671 up ok and shuts it down fine, as with it original mains adapter, so the board doesnt seem to be the problem. i also have a morex 60W, if i hook the morex up to the 1290, it receives 12V but will not power up - the same as what happens to the 671 board.

    it like the carnetix 1290 is supplying 12V out, but not any current.

    has anyone else experienced strange probs like this ? i'm almost 100% certain its a hardware prob with the 1290 !!



  2. #2
    Join Date
    Feb 2004
    oh one more thing,

    even though thid motherboard (v671) has an onboard DC-DC psu. i hotwired a morex 60W ATX psu to it, and it powers the board fine, however if i connect the 1290 in line with the morex, the morex 60W receives 12V from the 1290 but wont power the board !!!

    i also just read elsewhere that the 1290 is the first in the series with an onboard relay for compatibility with ALL motherboard ACPI power headers, so i shouldnt be getting problems with power up either !!

  3. #3

  4. #4
    Join Date
    Feb 2004
    my supplier (linitx) has issued an RMA today on the unit, so thanks for the offer, but its allready been sent off, they are going to test / replace the unit.

    can i ask if the unit should make a repetative ticking noise, is that normal ?

  5. #5
    Join Date
    Nov 2003
    Marietta, GA
    No, it sounds like the ACPI relay is operating sporadically. Never heard that kind of noise before. Sorry for the problems.

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