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Thread: Induced noise/Ground loop trouble shooting guide.

  1. #11
    FLAC
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    Nope, my bet is its just a lousy invertor. Keep the chassis grounded and you just fixed your problem

  2. #12
    Raw Wave kickercivic1's Avatar
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    I didnt think my inverter was lousy. I got this one http://cgi.ebay.com/Monster-Mobile-P...QQcmdZViewItem

    I am upgrading my grounds up front today. I am running 4g from battery to the chassis and one to the engine block. I am wondering if that will help any?

  3. #13
    FLAC
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    It cant hurt but you wont notice a difference.

    Most of these inverters were never designed to do what we are asking of them. Lousy may be just for our applications.

    Honestly, if grounding the chassis fixed it and you followed my grounding routine above, you are in good shape and should press forward.

  4. #14
    Raw Wave kickercivic1's Avatar
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    I called the monster power tech and they told me i am suppose to ground the inverter chassis.

  5. #15
    FLAC
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    Cool! Strange though, wouldnt you think an internal wire connecting the chassie to the ground would make sense? One simple addition in design would have saved you a TON of frustration

  6. #16
    Raw Wave kickercivic1's Avatar
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    ya, but this is my third inverter and they were all different companies and I had the same problem with all three of them. I tired like 5 different grounds. I really think i have a ****ty kenwood 4 channel amp.

  7. #17
    Raw Wave kickercivic1's Avatar
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    fixed. just got a escilpe amp all noise gone..piece of **** kenwood, made me go thru all this **** for no reason... thx will..

  8. #18
    Low Bitrate snoopdan's Avatar
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    What about addressing problems from actual power supplyies on a car PC. I know I have so much trouble with noise from my M2-ATX that I no longer hook up my carputer to rest of the car's audio system, when the initial idea of getting a car pc was to eliminate the use of a cd player head unit alltogether.

    Id love to find a way to fix my noise problem, im about 1/2 way ready to pull my carputer alltogether and just stick a dvd player in there and leave it at that.
    MECA Car Audio Judge

  9. #19
    _
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    really? you have noise from the M2? why do you think this is?

    I'm running an M1 and have no issues. Before I went optic I didn't have many issues either.

    I wonder what's different in the M2 that makes it nosier?
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  10. #20
    Newbie
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    May 2006
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    Guys,

    I just hooked my PC up and I also have the noise. What I did was instead of connecting the power and ground to the car I used another PSU I have for testing purposes and when I hook it up to the other PSU the noise disappears, as soon as I plug it back to the car the noise comes back.

    I have also tried using the ground from the PSU and the 12v from the car and the noise again shows up. So it has to be the 12V from the car battery. What can I do about that?

    Thanks

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