Thread: M2-ATX No Boot

Just took a few closeups for a FAQ that I plan on writing tonight.



Positive - Remote - Ground

Thanks for your help guys!!

I took the suggestion from 'v8 scmitar' to short J9, however i used an old switch from an atx case and it works!!!!

Question is: The M2 board was in traditional PSU mode. I have just tried it with a jumper on B of J10 and it works with the switch, not without.
Therefore will i have to manually switch on the board each time?

Thanks

P.S - I have also tried putting a Jumper on J9 (toggle switch) instead of the switch and that didn't work.

Originally Posted by aspitfire

and your pictures, the top diagram is for a M1 and the bottom one is for the M2.

Good call!!

Anyone have any ideas??

Will i need to manually switch the board on each time?

Thanks

J9 is not meant to be permenantly shorted, it's only mean to be breifly shorted to send a signal to power on/off.

The M2-ATX is desgined so that is has permentant power thru the red wire, and when it receives voltage on the white wire (when u switch the ignition key, hence the name "switched" power), it waits a few seconds then tells the motherboard to go on.

So basically, give the board constant power on the red wire. Then try to connect the white wire (use a switch to mimic the car's ignition key being turned). If the board still doesn't power on, then try to reverse the jumper you have connected to the motherboard. This is because the PSU shorts the pins by grounding, so polarity matters (I think that's correct!)

If it still doesn't work, it maybe that you have a defective psu. have a look at this thread and see if you're getting the same symptoms.

sama,

My problem is with when i switch the car's ignition, the white wire should send the signal to the board and the M/B should power on.
This doesn't happen in my case, the only way i have had it running is with a switch from an ATX case on J9.

So according to your post i should reverse the jumber (J8) i have connected to the M/B?

yes, that has solved it for some.

by the way, j9 and j8, as per the manual, are connected in parallel.

there is a post around here somewhere that says something like the board need to be powered manualy or something the first time then it will work auto after that. Couldnt say I found this but then it only ever powered the fans on mine so it was all a bit odd. All I can think of is maybe you have them jumpered the wrong way, doubt it but maybe. Other things maybe the 12v on the acc line hase to be made all the time not just touched off 12v then to shut down you disconect it. If its on B I think this is 10 seconds and the board will start shutting down. Does this feature still work, as in the shutdown? J8-J9 can be anyway as Sama says they are parallel so in reality it doesnt matter.
Atleast you are getting somewhere, if you can post a pic of the way you have the jumper set for the timing.