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  • Noise in video Lilliput's signal

    Hi all. I have some slight noise in my video signal, visible as moving horizontal lines when the screen is displaying a solid color (esp black). I don't think this was the case before I put the guts inside my MoCoSo case (which has a fan integrated).

    Has anyone seen video noise caused by noise inside the case, or just along the vga cable? I was considering trying a ferrite donut around the cable, but am concerned its from inside the case. Any tips would be greatly appreciated.

    The video by the way is from the onboard chipset on an intel d945gclf2.

    Thanks for any tips...
    // 2008.5 CWP MAZDASPEED 3
    // mp3car showoff thread
    // appearance & performance mods
    // computer setup

  • #2
    if your running your sound cables alongside the video cables your going to have interferance.

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    • #3
      Thanks for the thought. The RCA cables are running parallel about a foot away from the VGA cable. Do you think a donut would help?
      // 2008.5 CWP MAZDASPEED 3
      // mp3car showoff thread
      // appearance & performance mods
      // computer setup

      Comment


      • #4
        Actually, you want to keep all signal cables (audio & video) away from power cables.
        If you get interference from audio and video cables next to one another, then there's some other problem.
        Have you looked in the FAQ yet?
        How about the Wiki?



        Under normal circumstances, a signature would go here.

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        • #5
          i would run the vga cables down the middle of the car, Power on the left and audio on the right.

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          • #6
            I have the same problem.
            There is no lines / noise when I use the AC power adaptor.

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            • #7
              Originally posted by Mazda6gp View Post
              I have the same problem.
              There is no lines / noise when I use the AC power adaptor.
              I ran all audio and video down the middle, then power on the right side of the car. i have no noise at all untill I turn on the A/C Blower. Then I see slight lines but not that noticable.
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              • #8
                I get hazy horizontal lines, but when I press on my brake pedal, they go away...go figure
                Sig, smig...

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                • #9
                  All of my cables are ran together and I had the lines at first, but a ferrite loop fixed the problem.

                  Speaker cable can be ran by power, just not low-level audio cables(i.e. rca cables)
                  xb_mini

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                  • #10
                    i must sound like a complete idiot but whats a ferrite loop?

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                    • #11
                      are you powering the screen off the computer's power supply, or running a seperate line to it? I had a lot of interference and noise issues until I powered my screen from the same psu as the computer.

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                      • #12
                        Originally posted by TheCustomizer View Post
                        i must sound like a complete idiot but whats a ferrite loop?
                        Its whats inside of the plastic ring by the end of a lot of cables.
                        http://en.wikipedia.org/wiki/Ferrite_bead

                        I guess the technical name is "ferrite bead".
                        xb_mini

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                        • #13
                          Originally posted by TheCustomizer View Post
                          i must sound like a complete idiot but whats a ferrite loop?
                          Look HERE
                          If you cant DODGE em, RAM em.

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                          • #14
                            For folks that have used them -- what size and did you place it over the cable toward the screen end or the psu end? I'm asking only because digging out the cabling is not going to be easy...
                            // 2008.5 CWP MAZDASPEED 3
                            // mp3car showoff thread
                            // appearance & performance mods
                            // computer setup

                            Comment


                            • #15
                              http://www.mercola.com/forms/ferrite_beads_howto.htm
                              That might help.

                              I think you should probably put it closer to the end that you think is causing the noise. I put mine close to the power supply.
                              xb_mini

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