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  • LCD flicker, help!!!!

    My motorised Lilli flickers.

    I've tried everything on suggested on the forum but nothing works. I can't power if off the PSU because it uses too much power.

    Its because of the harddrive, i think when the drive is accessing, its sending ripples though the VGA cable up to the screen. Any electronic experts care to share some knowledge?
    Vehicle Media Systems
    Australia Car PCs www.vmscarpc.com.au

  • #2
    anyone??? would grounding the LCD to the power supply do the trick, i'll give it a go
    Vehicle Media Systems
    Australia Car PCs www.vmscarpc.com.au

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    • #3
      im having the exact same problem as you!! did you overcome this problem? anyone else have any ideas? and your right, when the computer is processing it puts flicker through the screen.

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      • #4
        I found that updating the drivers on a friends PC solved his problems.

        Just make sure that you have a very solid ground and adequate power going to the screen in the first place.
        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!

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        • #5
          i had a similar problem when using my OPUS Dc-DC Supply, it would ripple the video signal and pop the audio, it turned out one of the SMD Capacitor was faulty

          Does it do it when powering the PC with a ATX PSU?
          For Bootscreens click Here

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          • #6
            Originally posted by MRVJ245 View Post
            i had a similar problem when using my OPUS Dc-DC Supply, it would ripple the video signal and pop the audio, it turned out one of the SMD Capacitor was faulty

            Does it do it when powering the PC with a ATX PSU?
            Mine does

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            • #7
              everything is grounded and connected correctly as far as i know. when the computer is idle the screen does not flicker, but as soon as i access data or run a program flickering occurs (hard drive access) it doesnt do it connected to normal power and i have also tryed a video card in it with no luck!

              Ive read through the forums that connecting the LCD to the computers psu (m2-atx) it solves the problem, but is there another way around this? its driving me crazy

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              • #8
                your power cable to the monitor, does it have a black box on it with a regulator and filter capacitor?
                For Bootscreens click Here

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                • #9
                  the reason that connecting the screen to the PSU solves this problem for some is that the PSU provides more regulated power. From what I remember, the Lilli's need that regulated power, while the Xenarcs don't necessarially.
                  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!

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                  • #10
                    Thats Correct, thats why they have the Regulator/Filter Box on the DC Line in for the Car Adapter
                    For Bootscreens click Here

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                    • #11
                      ok so we need to regulate the power, I was wondering if instead of connecting it to the psu, could i buy some sort of DC-DC converter or something, does anyone recommend a good one or what i should be looking for?

                      The speakers do the same thing, when accessing the hard drive I can here buzzing sounds comming from the speakers, I am running a 250w AMP.

                      The screen does have a filter/regulatr or EGG box thing on it.......?

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                      • #12
                        there's no converting to go from DC-DC.

                        Best bet it to connect it to your PSU if you have the avaliable power on it.

                        Else, you can buy a point-of-load for the screen if your power supple will support them.

                        As for your speakers, that's a ground issue that could be any number of things. For that, please see this thread: http://www.mp3car.com/vbulletin/showthread.php?t=79248

                        So are you saying then that the screen does have an egg on the power line?
                        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!

                        Comment


                        • #13
                          Originally posted by RedGTiVR6 View Post
                          there's no converting to go from DC-DC.

                          Best bet it to connect it to your PSU if you have the avaliable power on it.

                          Else, you can buy a point-of-load for the screen if your power supple will support them.

                          As for your speakers, that's a ground issue that could be any number of things. For that, please see this thread: http://www.mp3car.com/vbulletin/showthread.php?t=79248

                          So are you saying then that the screen does have an egg on the power line?
                          Technically, a pol power supply is a dc-dc converter. No need for a supporting power supply, only if you want it to switch on/off with it, and even that is easy with a relay or hooking it up to your ACC line instead of directly to 12v.

                          If the regulator is already used, it most probably is a grounding issue, maybe where your carpc is badly grounded (and grounds over the vga cable's ground, over the screen, to the screen's ground) or your screen is (the other way around).

                          Joachim
                          List of front-ends/usefull apps
                          XTroniC | XTroniC Direct

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                          • #14
                            yeh i had problems where it was grounding thru my brothers Audi TV Module...NOT GOOD!
                            For Bootscreens click Here

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