Thread: Really stuck with M1-ATX setup! Please advise!

Originally Posted by a-ten

Grrr.....OK, I may not know an awful lot about computer components but I'm pretty sure my M1-ATX power supply has arrived faulty... I don't seem to get ANY power out of it!

Having set it all p ready to work I clearly wasn't getting anything to the motherboard so I've set up the following to test it.

Could you please have a look and let me know if I'm doing anything wrong because if not I'll have to contact my supplier.

1) Connect the faston power supplies and check voltage. + is getting 12v and sw is getting 12v...relative to the - terminal which is grounded.



2) Hacked up an old atx connector and grounded pin14 (PS_ON) connection. Same principal as DarquePerverts FAQ to powering a DC-DC PSU from indoors here

I also bared the ends of one of the yellow wires (supposedly 12v) to allow for testing later.



3) Put the jumpers in position A (although this shouldn't effect turning on I don't think)



4) Shorted J6 using spare jumpers (and J8 after just J6 didn't work) to mimic the motherboard switch being ON.


I then tested the voltage between the bared yellow wire and the green/black wire connection. Sweet F.A.

I also check the fuse on the board and its fine. Have I got a faulty board or am I being stupid?

Pics aren't working.

Michael

Remove the J6 and J8 jumpers. You don't have to simulate anything thing like the MB power switch being pushed.

Also, put it into "DUMB PSU" mode by removing all the jumpers on the ABCD pins.

Then, remove power from the "switched" power wire leading to the M1.

You need to simulate the accessory, so either put a switch in line, or just connect and disconnect that wire to get the unit to start and stop.

Also, are you sure you found the proper wire to ground in the ATX connector. MAKE SURE you found the right one. Check, double check, and triple check.

Michael

You hacked the ATX connector that goes from the M!ATX to the motherboard? OK, I see that you're basically fooling the M1ATX to read that it should provide power. But why?
You should jumper the ATX connector for teh ATX PSU that you're using to supply power to the M1ATX, not the M1ATX to the motherboard...

I really don't understand what you expect to be able to test in this configuration....

Originally Posted by a-ten

WiredWRX...

Not quite sure what you mean here. Are you basically saying mimic an ignition switch?

Andy

Yeap.

Michael

OK....
Here's how you need to set this up....

You have an old spare desktop ATX power supply. coming out of that power supply, you should have a 20-pin ATX connector and several 4-pin HDD molex connectors. There may be others, but these are the only two we're concerned with.

From the male HDD connector, you have two wires going into the 12v (yellow) and one going into a ground (black) wire.
The black wire goes to the ground terminal on your M1ATX.
One wire from yellow gets a switch in-line and goes to the IGN or ACC terminal on your M1ATX.
The other 12v wire goes to the +12v terminal of your M1ATX.

Connect the male HDD molex into your desktop ATX PSU.

Wire up the M1ATX to your carPC according to the manual.

Short pins 13 & 14 from the desktop ATX PSU, and you should get 12v going to the M1ATX. If the switch on the wire going to ACC terminal of the M1ATX is in the closed (on) position, the computer should boot up per the configuration of the M1ATX jumpers.

If you have any questions, PM me. I tried taking some pics of the connectors I made, but my digital camera sucks balls and I couldn't get a clear picture to save my life.


[EDIT]
You appear to have it wired up this way, per an earlier post. We were typing simultaneously.
Really, I'd test by using the M1ATX conencted to the motherboard, rather than your "fooler" plug. You're going to know whether it's working or not right away.