Thread: m2-atx no longer starts up with ignition

Just for fun I went and checked it again after re-reading the m2-atx manual, and unfortunately nothing magical happened but i did get some more information for you.

It appears that the 5v bus is being powered because when I turn on the ignition my usb-hub's power light comes on. unfortunately the mobo still doesn't power up until i press the on button though. I also tried switching the J8 and J9 cables but that did nothing.

I then tried removing the 12v battery line and using the 12v ACC line in it's place. Upon turning the ignition I would see a flicker of power across the USB hub, however the PC would not turn on even with the power button.

No luck on this one... no one seems to have any ideas. Am i the only one that has ever had this happen?

I had the same exact problem. I had to RMA it. I think it may have something to do with the programed chip being bad but I am not 100% sure.

Originally Posted by agentloveless

I had the same exact problem. I had to RMA it. I think it may have something to do with the programed chip being bad but I am not 100% sure.

I've been trying to get in contact with mp3car.com about this, but so far they have not responded to me

Originally Posted by bmbr

Hi all,

My m2-atx has been working properly for a few months now, and then this weekend it began giving me problems.

When I turn on the ignition, it no longer boots my PC. I have double checked my connections, and they seem good. If I press my power button that is connected to my m2-atx, it does boot the PC. If I turn my ignition off, the m2-atx will cut power to the computer after a few minutes (but does so via hard power off, not hibernate).

I thought initially that it might be the jumper that runs from the m2-atx to the power-pins on my mobo, but if that were the case i suspect pushing the power button i have connected to the m2-atx wouldnt work.

I then thought that maybe my m2-atx wasnt getting ACC (white cable) power properly, but I busted out my multimeter and verified that the ACC line was only putting out 12v while the ignition was on. I then plugged it back in and verified that the m2-atx is getting the ACC and battery 12v via the pins on the bottom of the board.

I have also tried migrating the jumpers to all of the diff positions to see if it was a timing issue on bootup, but that does not make it start either.

I'm very confused at this point. Any insight?

Thanks so much!

I had a similiar issue but it turned out to be my reversing some of the LED/reset/power connectors to the mainboard.

Try this:
Set the M2-ATX to dumb PSU mode (ABCD=0000)
Disconnect all the reset/LED connectors on the mainboard, just have the power-on connector.
Disconnect all other devices (HDDs, USBs, etc) from the mainboard.

Does it correctly boot the "bare" mainboard on dumb PSU mode when you appply power to the M2-ATX?

Then take it from there.. (that how I figured out my problem).

Originally Posted by piabu

I had a similiar issue but it turned out to be my reversing some of the LED/reset/power connectors to the mainboard.

Try this:
Set the M2-ATX to dumb PSU mode (ABCD=0000)
Disconnect all the reset/LED connectors on the mainboard, just have the power-on connector.
Disconnect all other devices (HDDs, USBs, etc) from the mainboard.

Does it correctly boot the "bare" mainboard on dumb PSU mode when you appply power to the M2-ATX?

Then take it from there.. (that how I figured out my problem).

Although I went through a similar process initially, just to double check I went back and did exactly what you suggested: tried booting a bare mobo. I even went so far as to bust out the manual for the epia board to make sure that I wasn't insane and hooking up the power line from the m2-atx improperly. Unfortunately everything was setup properly, and it still did not power up bare.

I have continued to try to contact mp3car.com with no luck. I emailed them last Friday, and then again on Monday. I also tried calling them on Tues but no one answered.

** Update ** Just got an email with RMA information from mp3car.com! Thanks mp3car!