m2 -ATX problem/Need a momentary switch that works with voltage...

**mazda8** · 06-06-2009, 02:49 PM

So Here's my delima. I think the m2-atm (used) I got, has an issue with the ignition switch. It does not come on with the car, and I've test the wires for connectivity, as well as voltage.

Before I go any further. I was not given a jumper with it, there are jumper settings, and right now based on the manual I am at P0. It recommends P1. with a jumper... but I don't have that, could that be why?

If that is not why, the computer only comes on when I physically connect the wires from the parallel on/off switch part on the m2-atx...

So it should come on with ignition. Only comes on with the m2-atx parallel switch cables... and that is regardless if it has ignition power or not.

So my question is, is there a momentary switch that will a) switch on when it first gets voltage, and b) switch when it loses voltage. As to simulate the m2-atx standard function, only between the parallel on/off switch.

**Jistari** · 06-07-2009, 12:32 AM

Radio Shack has jumpers you can buy in a little baggie.

Google (or Bing) for the manual and look up what jumper position you want to use.

**mazda8** · 06-07-2009, 12:34 AM

Originally Posted by Jistari

Radio Shack has jumpers you can buy in a little baggie.

Google (or Bing) for the manual and look up what jumper position you want to use.

they don't actually. Or least the ones around me don't... they suck...

I have the manual, but it doesn't say whether or not the ingition wire does anything on p0 (w/o any jumpers) I guess the simple solution is get a paper clip and temporarily connect the pins. But I figured I ask first because I've put it all back in the house. And, that may not be the answer anyway..

**colin** · 06-07-2009, 02:19 AM

I think p0 is dumb-psu mode. IGN would not do anything.

Make sure you read the manual before you go spend money on switches that you might not need. Jumpers should be found at any electronics store near you. If not, theyre a few pennies online.

**HiJackZX1** · 06-07-2009, 07:19 PM

Originally Posted by mazda8

they don't actually. Or least the ones around me don't... they suck...

I have the manual, but it doesn't say whether or not the ingition wire does anything on p0 (w/o any jumpers) I guess the simple solution is get a paper clip and temporarily connect the pins. But I figured I ask first because I've put it all back in the house. And, that may not be the answer anyway..

Back in the day Radio Shack was awesome, but now, all they do is push phones, SAT Radio, and Tvs on people. They are no longer really hobbiest friendly. I am sure you have an old MoBo laying around that has a jumper on it. Maybe even a old broken CD ROM or HDD that has one?

Originally Posted by colin

I think p0 is dumb-psu mode. IGN would not do anything.

Make sure you read the manual before you go spend money on switches that you might not need. Jumpers should be found at any electronics store near you. If not, theyre a few pennies online.

I think its dumb mode also. Find a jumper and all should be good.

**Jistari** · 06-07-2009, 11:52 PM

Originally Posted by mazda8

they don't actually. Or least the ones around me don't... they suck...

I have the manual, but it doesn't say whether or not the ingition wire does anything on p0 (w/o any jumpers) I guess the simple solution is get a paper clip and temporarily connect the pins. But I figured I ask first because I've put it all back in the house. And, that may not be the answer anyway..

You are looking in the grey set of drawers with the part pictures on the front, like mechanics toolboxes right ? They are not on the wall, even the crappy little RS in the mall had them?

**mazda8** · 06-08-2009, 07:48 AM

Originally Posted by Jistari

You are looking in the grey set of drawers with the part pictures on the front, like mechanics toolboxes right ? They are not on the wall, even the crappy little RS in the mall had them?

yes... I looked like I said. They didn't have any

**Curiosity** · 06-08-2009, 11:00 AM

Might be in the computer section
Model: 276-1512
http://www.radioshack.com/product/in...ductId=2103807

**mazda8** · 06-08-2009, 04:09 PM

Okay. so I just borrowed a jumper out of another computer. Still didn't work.

I've got all the wires plugged in and the ignition line IS giving off 13 volts. When I don't use the ignition line, and just connect the jumper pins where a normal on/off switch on a computer would go, it powers on just like it should. So does anyone have any ideas on what's wrong with this thing?

**HiJackZX1** · 06-08-2009, 04:34 PM

Originally Posted by mazda8

Okay. so I just borrowed a jumper out of another computer. Still didn't work.

I've got all the wires plugged in and the ignition line IS giving off 13 volts. When I don't use the ignition line, and just connect the jumper pins where a normal on/off switch on a computer would go, it powers on just like it should. So does anyone have any ideas on what's wrong with this thing?

What about constant power? Is the PSU always getting power upon ignition and turning off?