M2 ATX Problem - Page 2

cell21633 · 02-12-2006, 01:28 PM

would we be able to send these units back in for modification or exchange? i bought mine off of KaL's FS thread. i don't remember if i got the test unit or production unit.

Quote: Originally Posted by andrewb

EPIA-SP1300 is a bit fussy at startup.

On the M2-ATX, changing R4 to a 80-120K (currently 47K) will soften the 5V rampup.

R4 is a small STM resistor, next to the ATX connector.

Future versions of M2-ATX will have the change in place.

-Andrei

0okami · 02-14-2006, 06:59 AM

Quote: Originally Posted by andrewb

EPIA-SP1300 is a bit fussy at startup.
On the M2-ATX, changing R4 to a 80-120K (currently 47K) will soften the 5V rampup.
R4 is a small STM resistor, next to the ATX connector.
Future versions of M2-ATX will have the change in place.
-Andrei

Is there an aproximate date when these future versions will be available? Or Are they already available?
If I bought one now from mp3car.com, would it be the updated version??

Im VERY interested in purchasing this unit but I'm reluctant due to the problems im reading about. (I own a sp13000 - currently in the mail on its way here)

v8 scimitar · 02-14-2006, 05:06 PM

Just got word tonight my new/modified PS is being shipped tomorow. I will keep you all posted as to whether its a success or not. I think it will be though AndrewB seems pretty confident. Have to say he seems a good guy to deal with since my original supplier passed me over to him to deal with direct.

Osires · 02-14-2006, 05:45 PM

Ah that sounds great.. but AndrewB if you read this.. do you know if cartft.com has your old version or the updated version, i dont wanna RMAtroubles internationell, thats messy. Hope for an answer

Linde · 02-14-2006, 06:19 PM

Quote: Originally Posted by Osires

Ah that sounds great.. but AndrewB if you read this.. do you know if cartft.com has your old version or the updated version, i dont wanna RMAtroubles internationell, thats messy. Hope for an answer

Would realy like to know too.
I have shipped my M2-ATX to them and they have got it. But haven´t heard anymore. I guess they work on it.

DaveB · 02-15-2006, 12:45 AM

Hey guys,

I think I just solved most of your problems with the M2-ATX. I just got mine working. When I gave up on the M2-ATX I started reading the owner's manual for the DSATX. There was a note in the DSATX manual that said that POLARITY MATTERS on the jumper wire that goes from the DSATX to the motherboard's on/off pins. Well, I thought of those pins as a switch. When shorted, the motherboard turns on. In fact, I've used a screwdriver across those pins to turn a computer on. So in my mind, polarity did not matter.

So I took the two pin connector that I had on the motherboard's on/off pins and I flipped it 180 degrees. The other end of this wire goes to J8 on the M2-ATX. Damned if the M2-ATX didn't power up my motherboard afterwards.

Amazing something so simple can bite you in the *** like that. swap the polarity on that connector from J8 to the motherboard and give it a try

mbkowns · 02-15-2006, 12:51 AM

The reason it matters is becuase it pulls the ground out to short the pins

aspitfire · 02-15-2006, 10:00 AM

so, who can i contact to get a new board shipped out, i just got my m2 about a week and half ago. Should i try going thru the person a bought it from? or contact AndrewB. Or should i test mine in home to see if its good? If so how can i do this. Thanks!

v8 scimitar · 02-15-2006, 11:50 AM

test it first then contact your supplier if it doesnt work.

xtremak · 02-15-2006, 08:42 PM

I have the same problem, my motherboard refuses to boot when +12V is supplied to ignition. I have checked all the rails and the values all look good but the board wont boot up, another thing I noticed is that when I remove +12V from the Ignition wire the board starts to boot up... This to me indicates some timing issue with the ON signal when Ignition is first put to +12V. Has anyone figured out a solution to this as yet.

0okami · 02-16-2006, 02:10 AM

Quote: Originally Posted by xtremak

I have the same problem, my motherboard refuses to boot when +12V is supplied to ignition. I have checked all the rails and the values all look good but the board wont boot up, another thing I noticed is that when I remove +12V from the Ignition wire the board starts to boot up... This to me indicates some timing issue with the ON signal when Ignition is first put to +12V. Has anyone figured out a solution to this as yet.

If you read back a few posts you will see this:

Quote:

Originally Posted by andrewb
EPIA-SP1300 is a bit fussy at startup.
On the M2-ATX, changing R4 to a 80-120K (currently 47K) will soften the 5V rampup.
R4 is a small STM resistor, next to the ATX connector.
Future versions of M2-ATX will have the change in place.
-Andrei

Zebelkhan · 02-16-2006, 10:30 AM

Quote: Originally Posted by xtremak

I have the same problem, my motherboard refuses to boot when +12V is supplied to ignition. I have checked all the rails and the values all look good but the board wont boot up, another thing I noticed is that when I remove +12V from the Ignition wire the board starts to boot up... This to me indicates some timing issue with the ON signal when Ignition is first put to +12V. Has anyone figured out a solution to this as yet.

I have already sent my M1 for replacement (according to AndrewB's PM it was fixed a few months ago) but if you still have yours try DaveB's suggestion on post 21 and let us know if it works for you too.

xtremak · 02-16-2006, 10:43 PM

I did try the suggestion in post #21 but to no avail. As far as R4 is concerned, mine says 660 which for surface mount ends up being 66 ohms and R3 the one below it says 471 which would be 470 ohms. I might have read the last digits wrong but will check again and post. Also, if anyone chould check the values for R3 & R4 and confirm this. Oh forgot to mention that I am only using the 4-pin 12V P4 connector as my motherboard only requires +12V and yes I have shorted the green wire to ground (pin 14 i think) to turn on the supply otherwise the supply won't turn on.

Linde · 02-17-2006, 10:48 AM

I did get this reply from CarTFT today

Quote:

Dear Daniel,

I think we know where the problem is. The manufacturer just told us that there can be problems while booting with the SP13000 mainboard. But he have found a solution already.
So we will send you an replacement next week, when we receive the new revision of M2-ATX.

Thanks,
Oliver Aigner
---
CarTFT.com

maded · 02-18-2006, 06:49 AM

Quote: Originally Posted by andrewb

EPIA-SP1300 is a bit fussy at startup.

On the M2-ATX, changing R4 to a 80-120K (currently 47K) will soften the 5V rampup.

R4 is a small STM resistor, next to the ATX connector.

Future versions of M2-ATX will have the change in place.

-Andrei

Hey Andrei, could you keep us updated when the new batch comes along? I'd almost ordered it when i read this thread - and held off...