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Thread: Lilliput 629 Ghosting

  1. #1
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    Lilliput 629 Ghosting

    Hey,

    I'm just trying to install my first carputer into my E36. All was going well until I hooked the screen up I'm getting terrible ghosting.

    I was originally using a 5 meter VGA extension cable and thought that might be the issue so I tried a 3 meter one which produced the same issue. I then thought that maybe there was power earthing issues in the car so took the screen out of the car and hooked it up to my laptop indoors using the mains adapter supplied with the screen. used the 5 meter cable again and had ghosting, tried the 3 meter cable and had ghosting. Plugged the screen straight into the laptop using the lilliput connector no ghosting clear as whistle.

    I read some posts on here that said the DIN connector is always pushed together properly which I checked and that seems fine....at leat I can't clear the ghosting by pushing the connector together tighter.

    Everyone else here seems to just plug in a VGA extension and away they go...here's the cable I'm using, seems to be pretty decent qaulity. http://www.maplin.co.uk/Module.aspx?ModuleNo=97365
    The cable is 28AWG so fairly thick.

    I'm out of ideas as to what's causing this....I know some people have extended using the 9 pin mini din but I can't find anywhere to buy these, I'm in the UK.

    Anyone have any suggestions?

    Cheers.

  2. #2
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    Lillyput 629 Ghosting

    Hey,

    I am trying to install my first carputer into my E36. All was going well untill I turned it on and noticed there was pretty bad ghosting on the display. I firstly assumed that this might have been the 5 meter VGA extension lead I was using so I tried a 3 meter one and had the same issue. I then thought I'd take the car out of the equation and took the screen indoors and hooked it up to my laptop and powered the screen on the mains. Again I had ghosting, basically the only time I don't have ghosting is when I plug the screen in without any VGA extention cable. I have read other posts and seen some people have had issues with the 9 pin DIN connector not pressed together properly but this is fine on mine. I have tried it with three different VGA outputs now and I get ghosting every time when using a VGA extension lead. I read that some poeple have used 9 pin DIN extension leads to extend the usb and VGA Lilliput lead but I can't find anywhere to get one of these in the UK. Here is the VGA lead I am using it's shielded and is 28 AWG cable so it's pretty thick.

    Anyone have any suggestions?

    Cheers,

  3. #3
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    Never had a ghosting issue with any of my screens.

    I had the original lilliput 619 which I extended the 9 pin lead with a home made 9pin extension and that was fine. Subsequent 619's were extended with fairly standard VGA extensions.

    Currently using a Linitx TMR with it's own extension and alls fine.

  4. #4
    Confusion Master
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    Quote Originally Posted by Forum Rules
    7. Post Moderation for New Members
    In order to keep spam to a minimum on the forums, the first few posts of new members are approved by a moderator. Until the post is approved, it will remain in place, but will not be visible.
    http://www.mp3car.com/vbulletin/misc.php?do=cfrules

  5. #5
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    The second post was posted in error having not noticed the message stating that the post would have to be autorised by a moderator first....apologies.

    I don't suppose you've got any details on how you made the 9 pin extension cable?

    Thanks.

    Dan.

  6. #6
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    I think I picked up a 9 pin male to 9 pin male from somewhere, cut off one of the plugs a soldered on a 9 pin female I got from RS Components. I had to buzz through the cable to find out what wire went to which pin.

  7. #7
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    I have ghosting issues on my EBY701 as well. Im running a high quality 5m shielded VGA extension cable. Strange that on my old MTSVO screen, I built the VGA extension cable using thin unshielded ethernet cable and it worked just fine.

    I havent figured out how to solve the ghosting issue, but changing the resolution to 1024 x 768 and messing with the refresh rate will atleast make it almost unnoticeable. Ive noticed in my case that the ghosting gets worse at lower resolutions.

    I wonder if it could be a grounding issue with the VGA cable's ground and power ground? Since you did mention there were no issues when not using a VGA extension.

  8. #8
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    Quote Originally Posted by Enforcer View Post
    I think I picked up a 9 pin male to 9 pin male from somewhere, cut off one of the plugs a soldered on a 9 pin female I got from RS Components. I had to buzz through the cable to find out what wire went to which pin.
    Ok cheers, I'll have a look into that then....what do you mean by buzz...just send a small voltage down the pin and get a reading at the other end with a volt meter?

    Quote Originally Posted by nobb View Post
    I have ghosting issues on my EBY701 as well. Im running a high quality 5m shielded VGA extension cable. Strange that on my old MTSVO screen, I built the VGA extension cable using thin unshielded ethernet cable and it worked just fine.

    I havent figured out how to solve the ghosting issue, but changing the resolution to 1024 x 768 and messing with the refresh rate will atleast make it almost unnoticeable. Ive noticed in my case that the ghosting gets worse at lower resolutions.

    I wonder if it could be a grounding issue with the VGA cable's ground and power ground? Since you did mention there were no issues when not using a VGA extension.
    I wondered that but the cable works fine on any other screen just not with the lillyput...plus I've tried two cables now and both are the same a 5m and a 3m. So annoying I'd have it all in by now if it wasn't for this!! lol Ow well looks like I'll have to extend the 9 pin Din if that doesn't work god knows!

  9. #9
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    Just because the cable works on another screen doesnt mean the Lilliput will handle it the same. To make sure it's not a grounding issue, take a multimeter and measure the resistance between the VGA's shield on the far end and DC ground on the lilliput. If the resistance is nearly 0, see if connecting the VGA's ground with DC ground will get rid of the issue.

  10. #10
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    Sorry don't follow that entirely... What do you mean by the VGA shield. Do you mean expose the shield inside the cable at the far end or just the D shape plug casing and then test the resistance from there to the earth/ground that I'm using on the power for the lilliput. Then if resistance is nearly 0 connect VGA ground (pin 5?) to the Lilliputs power ground/earth?

    http://pinouts.ru/Video/VGA15_pinout.shtml

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