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Thread: 3 months of fiddling around and NOTHING!!HELPP!!!

  1. #21
    Constant Bitrate
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    Feb 2004
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    Las Vegas, NV
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    I had this problem with a Sony Vaio. It's a grounding issue. I was using an inverter. The Sony Vaio power adapter has only two prongs. I had constant buzzing when using it. I then plugged my Dad's Dell laptop, which uses a polarized, 3 prong adapter. No noise. I wonder if you can get a replacement power supply (brick) that accepts a polarized power source.

  2. #22
    Low Bitrate
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    Sep 2004
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    Rochester, NY
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    Quote Originally Posted by antimatter
    Like i said you friggen guy GO DIRECTLY TO THE BATTERY
    Try a temporary setup by running wires from your battery around the outside of the car and in through the window. That will let you know if this is your problem (which it probably is).
    89 Mustang (Autox, road race, and cruiser)
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    84 Dolphin RV (Soon to be Carputer Heaven)

  3. #23
    Constant Bitrate techeros's Avatar
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    Sep 2004
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    you know antimatter...I never thought about doing that. Explain the 90 degree thinggie.
    03' Toyota Tundra T3 Special Edition - Polk Audio speakers - Sony 4ch amp - RF Sub amp
    Carputer Planning |---------*|
    Overall Implementation |---------*-|
    (Stereo complete)
    Computer installed and working

  4. #24
    FreeDrive Creator CdRsKuLL's Avatar
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    ok.. easy way to test to see what is causing your problem.. you say you dont get any noise when the laptop is running on batterys.. so its either one of two things.. either the psu for the laptop or the feed thats going into the psu. I would recommend connecting it direct to your battery while the car is running, just to see if it cures your problem.. I think this will.

  5. #25
    Variable Bitrate Squid's Avatar
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    Jan 2004
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    Pittsburgh, PA
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    When doing the initial testing & setup of my carputer, I had the laptop auto-power adapter
    in a cigerette lighter and I had all kind of noise. When I permanently wired
    the system in, I used the hot lead from the cigerette lighter still, but went
    to a chassis ground and got rid of my buzzing. But I agree with the other guys,
    if the whine is that bad, then get pure power from your battery and use a simple
    relay setup to have it switch on and off with ignition.
    CarPuter: Dell P3-500 Laptop; D-Link WiFi; Deluo GPS; D-Link Radio; iMac DVD w/ ide2usb
    Audio: Audigy 2 NX; Kicker KX700.5 amp; 20w center amp; Kicker L7 10" Sub
    Display: Lilliput 7" TouchScreen
    CarPuter Install

  6. #26
    Newbie outdidya's Avatar
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    Jul 2004
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    NY
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    NAHHHHHHHH

    Nothing , hooked up the power directly to the battery, the noise was even worse. I think it has something to do with the grounding. Any more suggestions? maybe i could buy some kind of inverter or an alternative to my adapter. I traced it down to the adapter and inverter basically.

    im open to any suggestions right about now .

  7. #27
    Low Bitrate
    Join Date
    Aug 2004
    Posts
    76
    Have you tried grounding the laptop? I also had a buzzing noise until I grounded my laptop. Just locate any metal part from the back of your laptop and connect it to your car's grounding spot. I have a plug in my serial port so I connected my ground wire there.

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  8. #28
    Constant Bitrate techeros's Avatar
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    Sep 2004
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    Mississippi
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    If he runs his lead from the pos bat post where is he grounding from..bat post? If not can line noise (dirty power) come from ground as well?
    03' Toyota Tundra T3 Special Edition - Polk Audio speakers - Sony 4ch amp - RF Sub amp
    Carputer Planning |---------*|
    Overall Implementation |---------*-|
    (Stereo complete)
    Computer installed and working

  9. #29
    Newbie outdidya's Avatar
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    Jul 2004
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    NY
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    yeah i grounded it , it gets a lil better but you can still hear it. uhhh, im about to throw this inverter out the window. i dont no what there is left to do. i think i just be one of the very few with noooo possible solution

  10. #30
    Newbie outdidya's Avatar
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    Jul 2004
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    NY
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    techeros, u find any solution to ur problem yet?

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