Thread: M2 ATX Problem

Originally Posted by ShawJohn

Can you ellaborate coucouillu

Yes of course but I am going to be supposed to be a beginner .

before making my changes (unmout my PC from car for maintenance), My PC car worked quite good but with plenty of sound parasites (I heard my engine RPM in my sound..ziiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiziiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii...

After maintenace, I just connected power harness to the VOOM pc case BUT NOT the the other cables (VGA and touchscreen) which join SCREEN and the VOOM.

The VOOM did not start...!!!!

After hours wondering what was happening, the VGA cable touched the VOOM ground and the VOOM started briefly...

So I connected the VGA cable and the VOOM worked again!!!!

So i understood I got a ground problem from the voom.

For resume :
Before maintenance, the ground of the VOOM was going through the ground of my screen (through VGA cable)...That's why i got such bad sound with parasites....

After maintenance, I did not plug any screen cable to VOOM, so the VOOM hadn't got any ground...

The problem came from a bad weld (how we say...a solder...soldering...) of the ground wire to the connector.

After fixing this problem, it fixed my sound problem too....

2 in 1.

Originally Posted by FatalSunrise

This is just to inform everyone who's got this M2-ATX problem. You can check your r4 resistor which is right next to power connector. There's two possibilities. It says 66C which is 47.5k ohm and then the newer model of this power supply where this resistor is 01D which is 100k ohm. This is how you can check if your supply newer model or not.

I emailed a guy selling them on ebay and he says the one he has is the latest and is labeled C56.. any idea what this is?

Thanks,
Chris

anyone?

I hate to beat dead horses, but are there any updates to this?

My SP13000 worked fine with my M2-ATX for awhile, but now my mobo won't boot. Here's the scoop:

What does happen:
Fans on (or connected to) mobo spin
HDD spins

What DOESN'T happen:
No beeps from mobo
The LED on J8 of the M2 doesn't light up
No video on the monitor

What I've tried:
Car's power and old ATX PSU (tried 10A and 15A rails)
Clearing the CMOS
Unplugging the HDD
Unplugging the monitor
Switching polarity of the mobo's power switch
Switching jumper settings for shutdown on the M2
Flipping the ATX cable

Any help would be great. I don't want to switch power supplies because my Ampie case is made for the M*-ATX, and the case fits great in my car.

Dan

did it boot on the other power supply?

When it DID boot, it was in the car. When that stopped working, I got ahold of an ATX power supply for testing inside (warm, bright, internet, etc...). It has yet to boot on the ATX PSU.

One thing I didn't think of before that seems crucial is that it stopped working after I first changed the jumpers on the M2 for the shutdown timing. More than likely a coincidence, but I want you to have as much info as possible.

Thanks for the speedy reply.
Dan

I just got my second m2 (rma'd the first one) and im still having the same problem. I am using it with a via c7. Fans and lights come on but no motherboard post. I am soooo frustrated with this thing. Any progress?

Grab a voltmeter and start checking the voltages, and make sure you are getting the required voltages coming out of the M2. If the mobo doesn't work with a standard ATX power supply, it could be shot.

This may sound stupid, but have any of you noticed that yours only seems to act up in colder weather?

I had this problem with my M2-ATX at about this time last year. The problem remained even after RMA-ing, and I eventually ignored it. Once spring rolled around, I had ZERO issues for the rest of the year. Everything was rosy and I completely forgot the whole thing even happend.

BUT then, we got that cold spell earlier this month, and I'm back to having the exact same issues all over again. Same symptoms as described above, however, mine varies between 2 different issues:
1) The typical no-beep, no-video, no-mobo, only fan spinning problem
2) Same as #1, except a constant BEEEEEEP-BEEEEEEEP-BEEEEEEEP-etc noise.

Just thought I'd see if you guys have noticed a similar temperature-related issue....