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Thread: Black & white screen issue

  1. #1
    Knight of the Megapower Wildside Expert jaxmazon's Avatar
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    Sad Black & white screen issue

    Hi Guyz I recently got myself a Scart to hdmi converter box for my monitor and have been using it to play my snes which works quite well. However when using my sega megadrive which is region modded when ever I play ntsc games I get a black and white screen does this mean I have to do the colour mod to my megadrive, or is my converter box not actually converting the rgb signal? I have also noticed that the image is blurry which is a pain so could it be that the converter outputting a composite signal not rgb?

    megadrive in ntsc mode works well on a crt tv however I'd rather use my lcd monitor because my crt is kinda in the way of everything :/

    heres the box

    http://www.ebay.co.uk/itm/SCART-HDMI...item1c1c701349

  2. #2
    Master of Shinobi omp's Avatar
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    The only thing I can think of is that your scart cable may not be a true RGB cable and it may only output through composite. This is only a guess as when using RGB the video encoder really doesn't do anything as RGB goes in and RGB goes out. I use a converter myself (SCART to component) and it works just jim-dandy.

  3. #3
    Knight of the Megapower Wildside Expert jaxmazon's Avatar
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    Quote Originally Posted by omp View Post
    The only thing I can think of is that your scart cable may not be a true RGB cable and it may only output through composite. This is only a guess as when using RGB the video encoder really doesn't do anything as RGB goes in and RGB goes out. I use a converter myself (SCART to component) and it works just jim-dandy.
    I thought that this has to be the case however the cable I use looks like an RGB cable like this one

    http://www.ebay.co.uk/itm/RGB-Scart-...item19c6b57ce1

    the cable has worked fine on other tv's so why is it doing this with the converter?

  4. #4
    Knight of the Megapower Wildside Expert jaxmazon's Avatar
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    sorry for double posting but my cable is rgb but the converter that im using seems to be only picking up the composite signal. Can I cut the composite signal in the cable so that it can only pick up rgb?

    can anyone recomend anything?

    Thanks

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    The composite video is needed because it carries the sync pulses in it.

    There is a SCART pin that forces a TV into RGB mode (called fast blanking IIRC) when there are *some* volts applied to it. Maybe the transcoder isn't sensing this pin, or the voltage is too low for it to use RGB.

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    Knight of the Megapower Wildside Expert jaxmazon's Avatar
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    Quote Originally Posted by Jorge Nuno View Post
    The composite video is needed because it carries the sync pulses in it.

    There is a SCART pin that forces a TV into RGB mode (called fast blanking IIRC) when there are *some* volts applied to it. Maybe the transcoder isn't sensing this pin, or the voltage is too low for it to use RGB.
    Okay thats just great well Im going to return this converter box since this hole this is pissing me off xD.

    would it be better if I get this

    http://www.ebay.co.uk/itm/Vintage-ga...item564103693c

    then use this to hook it up to my monitor?

    http://www.ebay.co.uk/itm/SVGA-VGA-M...item483e4a25e2

    again thanks for the help guyz

  7. #7
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    I think that component box is already in use by some fellow members here.


    The second thing is a VGA to component cable. Plain cable, no converter at all, this is for GFX cards that can output component through the VGA port.

  8. #8
    Knight of the Megapower Wildside Expert jaxmazon's Avatar
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    I just wanna say thanks for all the help and I have found the soloution to my problems below

    http://shmups.system11.org/viewtopic.php?f=6&t=35423

    instead of buying a SCART to component Im going to build a vga converter box which works very well as you can see below

    http://www.youtube.com/watch?v=Gvv4rHRaVpk

    and heres another example

    http://www.youtube.com/watch?v=VOeC5...eature=related

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