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Thread: M3-ATX Losing Power when Lilliput "Power On" Button Pressed

  1. #1
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    M3-ATX Losing Power when Lilliput "Power On" Button Pressed

    I posted this in the Newbie forum, but it didn't seem to be getting much attention, I hope someone in here can help spread some light on the issue I'm having.

    I have an M3-ATX PSU powering my Intel D525MW board / atom processor. 4g RAM / 120g laptop hdd. As far as powered USB items, I have the Car2PC module, an iBlue GM-2 GPS, a bluetooth dongle, a wireless network adaptor, and the touch screen input for my Lilliput 629GL monitor. I soldered the DC power cord that came with the monitor into the power / ground connections on a molex connector and connected that to the molex connector on the M3-ATX.

    The system does come up all together from a cold boot. It can also be rebooted after it's come up and everything will power on. The problem I'm experiencing happens when I resume from hibernation. Here's a step by step of what happens:

    - I turn the ignition key and after a few seconds I see the red light on the lilliput monitor come on signaling that it is indeed receiving power.

    - About 25 seconds later music will start playing (the song continuing from when I last shut off the car), yet the screen remains dark with the red indicator light on the Lilliput lit.

    - If I press the power button on the Lilliput, the system immediately shuts off. If I continue to press it, I will get a series of "No VGA Input" messages on the screen, and it will power off, but after about 30 seconds, the Intel POST screen shows up, and the system spits out the typical "The System Did Not Shut Down Properly... Safe Mode or Start Windows Normally.. blah blah"

    - I assume when the system goes into hibernation after I turn the key to OFF, it does so properly, because it will resume with the music playing that was on when I shut the car off. I don't understand why the Lilliput is shutting down the whole system the way I described.

    Anyone with any idea why this might be happening, I'd really appreciate it. My assumption is that the system can handle the load, as it does it from cold boots, but has issues after resume. Is this a bug in the M3?

    If there's more information I can provide, I'd be happy to, I just need to know exactly what is needed, and how to get it as I'm entirely new to electronics.. as in... I bought a multimeter for this project but it's still in the packaging. I'm not afraid of learning anything or getting my hands dirty, as I've already gotten this far, I'd just appreciate a little guidance. Thank you.

  2. #2
    MySQL Error soundman98's Avatar
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    have you tried powering the lilliput from the car?

    it kinda sounds like a odd driver issue with your pc hibernating, though the above would be the easiest way to confirm that..

  3. #3
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    Hmm... That might be a tough one now that I've cut the lilliput power cord and connected in a molex adapter... What would be the easiest way to do that?

  4. #4
    MySQL Error soundman98's Avatar
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    if you still have the cig. lighter adapter, just twist the wires back together(one of the wires should have 1 of 2 markings--either it will have a white dashed line, or ridges on it-- just make sure to connect the correct wires together).

    the next option would be to use the 110v dc adapter that the lilliput came with, or to get a cig lighter plug either from another device, or a electronics store like radio shack, and connect to the wire.

    and the last option would be to try a different monitor with the pc(even a normal-sized pc screen)

  5. #5
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    Update: After researching online, I found that there's a "secret menu" in the Lilliput 629GL that allows you to set the monitor to turn on automatically when it receives power. At first, this seemed promising, but now the system will enter a "reboot loop" at least half the time I attempt to start the computer, rather than it just crapping itself when I pressed the "ON" button on the monitor before. My guess at this point is that the M3-ATX can't handle the load of the motherboard, gps, wifi, and monitor at the same time. It's disappointing. I guess the only option now is to upgrade to a better power supply.

  6. #6
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    Just found this thread. It seems not even upgrading to the M4-ATX would help:

    http://www.mp3car.com/general-hardwa...eby701-on.html


    Obviously people have powered their monitors off of their PSU's in the past.. and I'm not running some monster system. Is this a design flaw in the M-Series of PSUs?

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