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Thread: TM-701L converted Lilliput causes radio interference

  1. #11
    Newbie lucho's Avatar
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    just soldered a cable to the actual vga connector on the outside, then grounded that.
    Epia M1000, two 80 GB Hard Drives, Lilliput 7" TS, 512 MB DDR, 300 Watt Power Inverter with Relay, Wireless USB Adapter. Routis 2004, Copilot 2003, Rayming TN-200 USB GPS in a 1999 Isuzu Rodeo

  2. #12
    Maximum Bitrate Rundell's Avatar
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    Did as you said and no improvment. Any other ideas?

    Quote Originally Posted by lucho
    just soldered a cable to the actual vga connector on the outside, then grounded that.
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  3. #13
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    There is another thread that mentioned the lcd screen interferences with the central car alarm on some european cars....

    From the latest test I did, I'm putting the lcd monitor as the prime suspect.

  4. #14
    Newbie Vicci's Avatar
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    Backlight

    One of the major sources of interference is the LCD backlight.

    On one of our earlier prototypes, large CCFLs caused the capacative touchscreen to jump around wildly, but as soon as the power was off it worked fine. See if interferance gets any less when you dim the backlight significantly.

    Not really a solution, but it might help refine the problem.
    There's nothing you can't do, so don't be discouraged just because no one else's done it.

  5. #15
    Variable Bitrate The Grinch's Avatar
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    Archimense, are you saying that this was not an issue until the in-dash conversion?

  6. #16
    Variable Bitrate
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    Quote Originally Posted by The Grinch
    Archimense, are you saying that this was not an issue until the in-dash conversion?
    I did not have my Lilliput in the car until I did the in-dash conversion, so I can't say...

  7. #17
    Constant Bitrate
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    Don't know if they still make it, but years ago there was a company that made shielding for car stereos. Basically what it was a braided copper mesh (looked a little like armor) that you wrapped the head unit in. This was really quite effective in the battle against engine noise picked up through the play head in a tape deck. Aluminum foil has also been known to work in this situation. You may want to try that to see if it kills the RF noise. It probably won't help much but at this point it doesn't sound like you've got much to lose. Try the foil first since it's cheaper.

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