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Thread: M4-ATX - power ON problem

  1. #1
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    M4-ATX - power ON problem

    i hooked up the power supply AND THE green LED blinked waiting for the board to turn on but it doesnt. i tested the wires and im getting enough voltage, i hooked it up directly to the car battery with 10 gauge wire.

    anyone have an idea if my brand new M4 is poop out of the box?
    Last edited by juice_e; 03-13-2011 at 03:13 PM.

  2. #2
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    ? anyone ...

  3. #3
    Maximum Bitrate Mickz's Avatar
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    What Mode is the M4 set to?
    What modes have you tried?
    How is the IGN wire to the M4 wired and is it wired the same for each mode you tried?
    How is the PC “power-button” line connected to the M4?
    What mother board are you using?
    Exactly which lights light up?
    What other signs of life are there when the MB tries to start?
    GA-Z77N-WIFI, i5-2400S, 8GB, Intel 520 128GB SSD, M4-ATX Modified, 2 Rev Cams, 2 Web Cams
    8" 16:9 TRANSFLECTIVE, Win8-64, Dual GPS RX and Garmin PC + Odyssey Nav, FM-DAB+, BB-Rec
    T-Screen HVAC control, custom microcontrollers, code and FE. CarPC Project

  4. #4
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    Quote Originally Posted by Mickz View Post
    What Mode is the M4 set to?
    What modes have you tried?
    How is the IGN wire to the M4 wired and is it wired the same for each mode you tried?
    How is the PC “power-button” line connected to the M4?
    What mother board are you using?
    Exactly which lights light up?
    What other signs of life are there when the MB tries to start?


    * Tried it in Mode 1 and in 0. (mode 0 with no IGN hooked up)
    * I have the setup wired directly to my car battery to test, so IGN and 12V are hooked together ( i even tried touching the IGN wire after 12 volt and still nothing)
    * Power button is connected to J8 pin 6,7 to power button pins on the MB
    * intel DG45FC
    * The M4 turns on but it wont turn the motherboard on. The green LED on the M4 lights up and flashes like it is supposed to but doesnt go on solid because it is still waiting to turn on the MB.
    * the other wierd thing is if i connect the power wires to the battery on and off than sometimes the motherboard power and fans will flicker for a split second.

  5. #5
    Maximum Bitrate Mickz's Avatar
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    What happens in mode 0 if you remove the PC on/off plug from the M4 and short the two pins of this lead that’s now going to the on/off pins of the MB together for second?

    I’m wondering if the on pulse from the M4 is too quick for the MB. This is adjustable via the USB connections and the supplied software.
    GA-Z77N-WIFI, i5-2400S, 8GB, Intel 520 128GB SSD, M4-ATX Modified, 2 Rev Cams, 2 Web Cams
    8" 16:9 TRANSFLECTIVE, Win8-64, Dual GPS RX and Garmin PC + Odyssey Nav, FM-DAB+, BB-Rec
    T-Screen HVAC control, custom microcontrollers, code and FE. CarPC Project

  6. #6
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    nothing happens... the LED just continues flashing ... do i have to hook up the rest of t he pins on j8 like the usb pins or ground or is that just to be able to program the M4

  7. #7
    Maximum Bitrate Mickz's Avatar
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    If you have it set up in dumb power supply mode and the on/off pins on the mother board disconnected from the M4 and wired up as standard PC switch then you have eliminated the turn on pulse width problem.

    Shorting the on/off pins momentarily (pushing the switch) on the MB should make the M4 act like a standard supply and switch on. I am sure you have tried plugging a standard ATX supply into the MB with the on/off switch set as describe.

    You need Ground, USB D+, D- and you may need Vcc as I don’t remember if the M4 requires it.

    Sounds like you might have a problem. There is a thread http://www.mp3car.com/power-supplies...ur-m4-atx.html that has a lot of info on the M4.

    I am working from memory here and dont' want to give you the wrong advice. Hopefully someone with more knowledge of this supply can help you out.
    GA-Z77N-WIFI, i5-2400S, 8GB, Intel 520 128GB SSD, M4-ATX Modified, 2 Rev Cams, 2 Web Cams
    8" 16:9 TRANSFLECTIVE, Win8-64, Dual GPS RX and Garmin PC + Odyssey Nav, FM-DAB+, BB-Rec
    T-Screen HVAC control, custom microcontrollers, code and FE. CarPC Project

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