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Thread: M2/car problems

  1. #1
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    M2/car problems

    as i posted here M2-ATX(-HV) 160 watt Intelligent DC-DC PSU
    Im having a few problems with my M2-ATX.

    1. When i turn off my car the power pulses and the computer does a hard restart, then 5 secs later will shut down, I have the jumper in position 1. I have tried swapping the IGN and POW lines but I know that is not the issues cause when i turn off the car the computer powers off instantly and when it comes back on i get a warning that the system didn't shutdown properly.

    2. If I turn off the engine and leave ignition on after about 10 mins the amp turn on wire will have dropped to 5V's and my amps turn off The voltage is still 12.5V's across the battery and 12.3V's across the amp's, M2, and my distribution blocks

    I swapped out the PIC controller for the one with the 1.4 firmware but that didn't seem to fix the problem. Could i maybe have gotten 2 bad controllers? or is my board bad or something else.

    I am running the LCD and my HD radio from the 12v lines and 2 amps and a powered antenna from the amp line. All of my car power comes from a 8ga wire connected to a distribution block to 4ga wire to battery. All grounds go to 8ga to distribution block to 4ga to bare metal frame ground. With engine on i read 13.3V's across the amps and 13.5V's across the battery's.

    Update: Finnally got a 13.8V AC/DC power supply and the M2 behaves properly. For other reason main power must be fluctuating.
    and i just got an Asus Xonar D2 it works beautifully on my main computer or on my car computer if i have an AC DC power supply running it if i run it in my car or on my desk off of the M2 i get nothing outa the front speakers.

    Any ideas?

  2. #2
    FLAC WuNgUn's Avatar
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    Quote Originally Posted by Virac View Post
    as i posted here M2-ATX(-HV) 160 watt Intelligent DC-DC PSU


    and i just got an Asus Xonar D2 it works beautifully on my main computer or on my car computer if i have an AC DC power supply running it if i run it in my car or on my desk off of the M2 i get nothing outa the front speakers.

    Any ideas?
    All I can say is, you should of went thru some more threads...I have a lot spewed out there concerning those Mini-Box hunks of ****!

    I have two Xonar's in my system, and I got nothing but static out of them when I ran an M2. And forget about upgrading to an M4 too...did the same thing!
    RMA'd the M4, and the replacement did the exact same thing...

    Bite the bullet and get an OPUS320...

    Sorry

  3. #3
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    Thats what i was figuring as the solution, but I still would like to know a way to fix it. Right now i have an old Xfi xtreem music pos that sounds nowhere near what even my xonar DX can do but.

    Side question if i do upgrade to a opus will it fit in the travla c158 that i have.

    And probally this will also fix the problem i have with my computer rebooting when i turn off my car, but again i still want to know. sometimes it sucks to be an engineer...

  4. #4
    FLAC WuNgUn's Avatar
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    It'll fix all your problems...
    Fix it? Best way to fix it is to Ebay it, and explain to the buyer the issues you had.
    I have no idea if it'll fit in your box...it's probably a LITTLE longer than the M2, and twice as wide...

  5. #5
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    would i want the 320 opus or would the 120 be suffiecient.

    edit: and by fit i mean fit to the mounting holes in the case.

  6. #6
    FLAC WuNgUn's Avatar
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    Quote Originally Posted by Virac View Post
    would i want the 320 opus or would the 120 be suffiecient.

    edit: and by fit i mean fit to the mounting holes in the case.
    I'd go for the 320 if you have the money...this will cover any future upgrading as well.

    Mounting holes? How would I know? lol You can always drill/tap new holes if its a concern...

  7. #7
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    @Virac:

    Can you give details about the solution you found?

    I'm specifically looking for what 13.8V AC/DC power supply you got, and how you wired that up. I'm having the same situation with my system, but I'm not sure what you did to solve it so I can replicate it.

  8. #8
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    Quote Originally Posted by chibimateo View Post
    @Virac:

    Can you give details about the solution you found?

    I'm specifically looking for what 13.8V AC/DC power supply you got, and how you wired that up. I'm having the same situation with my system, but I'm not sure what you did to solve it so I can replicate it.
    I don't think he found a solution, as you can't really run a AC/DC PSU in your car full time...
    You need a better PSU than the M2/M4...

  9. #9
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    Quote Originally Posted by WuNgUn View Post
    I don't think he found a solution, as you can't really run a AC/DC PSU in your car full time...
    You need a better PSU than the M2/M4...
    After re-reading it, I can see what you mean. I originally read it as if there were some device he installed into the car to correct for the fluctuating battery power. I was really asking because it didn't sound like an AC/DC (or DC/AC) converter would do anything, since you're still trying to go DC-to-DC, but I thought I'd ask in case it was a typo or he was installing it somewhere non-intuitive, but now I see that he was probably just saying that testing from another power supply worked fine (which mostly means that the M2 is working fine).

    I don't believe the "You need a better PSU than the M2/M4..." part, though. Spec-wise, the M2 is exactly what I need, and if this is the intended functionality, then it is just false advertising, and from what I've seen of the selection process for putting something in the mp3car.com store, I don't think they'd keep it in there if this were how it worked.

    I haven't tried polling voltages at various places when switching ACC power off yet, though, so that'll be my next step.

  10. #10
    FLAC WuNgUn's Avatar
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    I'd start reading up on threads of the M2/M4 before you buy...fair warning.
    And I'm totally sure MP3 would sell them, especially if they have an inventory of them, and especially since they don't RMA the PSU's themselves, but send you to the manufacturer directly...

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