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Thread: M2 ATX Problem

  1. #171
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    Quote Originally Posted by ramy_zohair
    Another thing is that the m2 remote amp pin is not powering my rockford amp. i measured the voltage across the pin, and it was 12V, at the amps remote terminal, it is 6V what could be the problem that is causing that voltage drop?? I tried to use a relay, but it seems that the remote pin output doesn't have enough juice to energize the coil. I really hoped that pin could produce more current. (i gives around 20mA - using my multimeter)

    Thanks for the help any keep that usefull thread alive.
    That's a big voltage drop; wires are essentially long resistors, but that's a large voltage drop ove what is probably 6ft of wire. I'd suggest try a different wire
    1997 Mustang GTS "Jenna"

    VIA SP13000, 7" Xenarc TSV, 200GB, 'modified' M2-ATX, 1GB DDR400/3200, BU-353. RoadRunner + LSXVoid

  2. #172
    Variable Bitrate ramy_zohair's Avatar
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    Quote Originally Posted by JasonWW
    First, it sounds like you don't have the instructions for the amp. Go to MP3car store and download the PDF file on it. Page 2 shows all the jumper settings.


    The reason it doesn't matter if your amps have soft turn on or not is because the amp will be fully on while the PC is still booting and if you use analog outs the soundcard will sometimes make loud noises.
    Well, i have the manual, but it doesn't say you have to have jumpers in for the PC to use the IGN for startup/shutdown (it say jumpers are for shutdown delay setup, and if noone are used, then the m2 functions as a normal psu - the power switch function is a different thing). anyways, i put in a jumper at B for a 5 sec delay and its all fine. Guess now i can say i have a fully functional M2 (except for the remote amp turn on - which i think is not the m2's problem)

    Regarding the amps, i'm using the ACC line to power all (M2 + 2 amps) and till now didn't experience any popups.

    Final Touches

    Car: 2002 Mitsubishi Magna EI
    CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB.
    Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp

  3. #173
    Variable Bitrate ramy_zohair's Avatar
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    Quote Originally Posted by Miles
    That's a big voltage drop; wires are essentially long resistors, but that's a large voltage drop ove what is probably 6ft of wire. I'd suggest try a different wire
    the wire is only around 2 ft. do u suggest using a thicker wire??

    Final Touches

    Car: 2002 Mitsubishi Magna EI
    CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB.
    Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp

  4. #174
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    Quote Originally Posted by ramy_zohair
    Another thing is that the m2 remote amp pin is not powering my rockford amp. i measured the voltage across the pin, and it was 12V, at the amps remote terminal, it is 6V what could be the problem that is causing that voltage drop?? I tried to use a relay, but it seems that the remote pin output doesn't have enough juice to energize the coil. I really hoped that pin could produce more current. (i gives around 20mA - using my multimeter)
    Don't measure the voltage across the pins, try the RMT pin and the other probe on the vehicle ground. After all, that is what the amp is connected to.

    The manual mentions that only one of the pins on the remote turn on jumper are to be used. The left pin is the remote and the right pin is ground. I just wanted to be sure your not combining the 2. Sorry, but just want to make sure.
    1999 Black Pontiac Trans Am
    CarPC's in F-bodies
    How To Relocate Climate Controls on the 97-02 F-body Cars
    (AMD Sempron 3000+, Opus 150)
    Car PC system is out, Alpine system is in.

  5. #175
    Variable Bitrate ramy_zohair's Avatar
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    Quote Originally Posted by JasonWW
    Don't measure the voltage across the pins, try the RMT pin and the other probe on the vehicle ground. After all, that is what the amp is connected to.

    The manual mentions that only one of the pins on the remote turn on jumper are to be used. The left pin is the remote and the right pin is ground. I just wanted to be sure your not combining the 2. Sorry, but just want to make sure.
    that's what i did

    Final Touches

    Car: 2002 Mitsubishi Magna EI
    CarPC: SP13000, M2-ATX, 512 MB RAM, 120 GB 2.5" HD, X-Fi Sound Card, Xenarc 700TSV, Garmin 18 USB.
    Audio: 2X15" Rockford Punch Z, 1 Rockford Punch 2-ch Amp, 1 Soundstream Lil Wonder II 4-ch Amp

  6. #176
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    Quote Originally Posted by ramy_zohair
    that's what i did
    OK, so guess it measures 12v, but as soon as you add the tiniest load it drops to 6v. Try a simple test light. Do you have one? It will create a small load when the bulb lights up. If it's really dim, then I'd say the remote circuit is messed up.

    Or, you could use a 6v relay and see if it can power that.
    1999 Black Pontiac Trans Am
    CarPC's in F-bodies
    How To Relocate Climate Controls on the 97-02 F-body Cars
    (AMD Sempron 3000+, Opus 150)
    Car PC system is out, Alpine system is in.

  7. #177
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    UPDATE:

    Borrowed my buddy's M2-ATX (the new version, he just bought it off mp3car) and my SP13000 has booted up perfectly every day so far for the past 3 days. It hasn't failed to post even once yet (knock on wood...).

    I'll be RMA-ing my old version and getting my own new version shortly.

    WHEW! Finally, a CarPC that actually boots up consistently! Now I know how it REALLY feels to have a CarPC!

    Thanks to all for their help.

  8. #178
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    I had lots of problems with both the M1 and M2 a few months ago. After about 3 boards, it hit me that it was the value ram that was causing the boot failure; none would post. Apparently the older versions of the M1 and M2 are VERY picky when it comes to ram. I swapped out the value ram with a Corsair's XMS series chip and have had no problems ever since. The value ram works just fine in a regular desktop pc enviornment but fails with the M1 and M2.

    Dont buy cheap ram! Because it works in your home pc doesnt mean it'll work in the car. Save yourself from loads of headaches.
    My PC: VIA MII10000 | 512MB DDR400 Corsair XMS | 80GB HDD | Creative SB Audigy 2ZS notebook | 7" Xenarc TS | M2-ATX | Custom Box |

    95 Mustang (99-04 Saleen Style)


    For Sale: Custom Panels

  9. #179
    FLAC is for flaccid parksgm's Avatar
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    Quote Originally Posted by ramy_zohair
    i measured the voltage across the pin, and it was 12V, at the amps remote terminal, it is 6V what could be the problem that is causing that voltage drop??
    The wire.

  10. #180
    FLAC is for flaccid parksgm's Avatar
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    Quote Originally Posted by XtremeSteel
    I had lots of problems with both the M1 and M2 a few months ago. After about 3 boards, it hit me that it was the value ram that was causing the boot failure; none would post. Apparently the older versions of the M1 and M2 are VERY picky when it comes to ram. I swapped out the value ram with a Corsair's XMS series chip and have had no problems ever since. The value ram works just fine in a regular desktop pc enviornment but fails with the M1 and M2.

    Dont buy cheap ram! Because it works in your home pc doesnt mean it'll work in the car. Save yourself from loads of headaches.

    You say that the RAM works in a regular PC, but not with the M1 or M2...this is most likely a difference in motherboards rather than powersupply.

    The power supply has no idea what brand of RAM is installed on the motherboard...it's likely you would have had the same sort of failure to post with a desktop supply, as the interaction is between the RAM, the motherboard, and the other hardware on the board.

    Although I continuously hear "not to buy cheap RAM", I buy cheap RAM, and have never had a problem with it. That's not to say I won't, but I haven't yet. When (and if) I do, I'll return the non-functioning RAM and buy myself some Cadillac silicon. Until then, if it works, I'll save my money.

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