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Thread: help with flickering lilliput 701 touchscreen in dash

  1. #1
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    Talking help with flickering lilliput 701 touchscreen in dash

    hi,
    i have a car pc with lilliput 701 vga touchscreen in dash
    and i have a flickering problem (when the car is on or off its the same)

    - refresh rate is set to 72Hz.
    - the length of the vga cable is 5 meters.
    - (+) power cable is passing next to the vga cable from the battery (+fuse) to the power supply.

    what can cause this problem?

    what i need to check ?


  2. #2
    Variable Bitrate
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    If the display is using a CCFL backlight, it could be that it's cold

    Edit: It could be that your power cable is near your VGA cable as well.

  3. #3
    Maximum Bitrate DeltaFX's Avatar
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    Try moving the power line away from VGA cable. There may be special concerns about how shielded is this vga cable
    Now Galileo is real. Muhahahahaha :p

  4. #4
    poz
    poz is offline
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    i verified that the problem is not on vga
    using a 12v 1.4amp battery connected to the acc and the battery
    the screen looks good without any flickering so the problem must be
    unstable (+) ..
    im sure im not the first one with this problem
    what do you think i need to check \ do ?

  5. #5
    Maximum Bitrate DeltaFX's Avatar
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    If I understand, your puter is in the trunck so there's a 5 meter vga/usb/... cable. But how's your screen powered?

    Direct from the batt with a short cable (batt->fuse->(POL)->screen) ? or from your carputer's PSU (Batt -(5m)-> psu -(5 m)-> Screen ?

    Where is your scren grounded ? What are the +,- cables gauge ?
    Now Galileo is real. Muhahahahaha :p

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