Neo Geo AES RGB scart...weird display on large LCD

Discussion in 'Neo Geo Discussion' started by Twimfy, May 14, 2009.

  1. Twimfy

    Twimfy Site Supporter 2015

    Joined:
    Apr 10, 2006
    Messages:
    3,570
    Likes Received:
    32
    Not sure where to put this query so hopefully this sub forum is ok.

    I usually play my Neo on a 19" LCD HD TV using an RGB scart cable. The picture quality is fantastic and I'm very pleased with it.

    Today however I gained access to a 42" LCD HD TV and so I immediately hooked up the Neo.

    The picture is nice and clear, no colour bleeding or scanlines however the top inch of the image is incredibly unstable, it's solid but it keeps waving from left to right.

    Anybody know why this is happening? The scart is plugged into the RGB scart socket and I have checked all picture settings and aspect ratios. Even in 4:3 it still does it.
     
  2. bobzee

    bobzee [undefined]

    Joined:
    Jan 21, 2008
    Messages:
    338
    Likes Received:
    2
    If you get a stable picture on your 19", then i'd suspect that the problem lies with the 42" telly.

    Have you tried all the scart sockets on the 42"?

    Also check the TV's settings in case any picture enhancement functions are active, some can degrade picture quality.
     
  3. Twimfy

    Twimfy Site Supporter 2015

    Joined:
    Apr 10, 2006
    Messages:
    3,570
    Likes Received:
    32
    Tried everything. It seems to be a failure to hold onto the horizontal as now the whole screen is moving.

    I might try the system again on my 19" as this is the first I've used it since it was packed away by my parents when they did a room move. There's a chance something might have gotten damaged.
     
  4. bobzee

    bobzee [undefined]

    Joined:
    Jan 21, 2008
    Messages:
    338
    Likes Received:
    2
    Just googled 'neo geo aes sync', and it appears that this is a common issue.

    Something to do with the sync in rgb mode, some tv's can handle it, some can't.

    There should be a mod/fix to clean up the sync signal, hopefully someone on here will point you in the right direction.
     
  5. Marmotta

    Marmotta Dauntless Member

    Joined:
    Apr 14, 2009
    Messages:
    755
    Likes Received:
    49
    I've been trying to mod my Neo Geo AES, but RGB just looks completely garbled on my monitor:

    http://85.13.243.2/~nekomaco/SANY0036.MP4

    It does seem to randomly affect some displays more than others. Obviously, your problem doesn't seem to be as bad as mine, but apparently it can be fixed by using higher resistance resistors on the RGB lines. I just can't be bothered at the moment though...
     
    Last edited: May 15, 2009
  6. Jamtex

    Jamtex Adult Orientated Mahjong Connoisseur

    Joined:
    Feb 21, 2007
    Messages:
    5,472
    Likes Received:
    16
    the neo geo has some shocking levels at RGB and sync levels, however the model number of your Neo Geo can be a indicator of how bad it will be.
     
  7. REXMONDAY

    REXMONDAY Rising Member

    Joined:
    Feb 28, 2007
    Messages:
    74
    Likes Received:
    0
    This is interesting you mention certain serial numbers have problems with RGB output, can you elaborate which serial numbers gives this problem? I have RGB to Scart and the output looks pretty good on a 28" CRT, I have a 47" LCD and tried it yet.
     
  8. Twimfy

    Twimfy Site Supporter 2015

    Joined:
    Apr 10, 2006
    Messages:
    3,570
    Likes Received:
    32
    http://nfggames.com/games/neorgb/

    Here is a pretty good guide to start with but there is no definitive guide. Many people have had varying results with different serials across the whole range. I guess it also comes down to the cables and TV you use as well as your own perception of what is great/awful.

    General consensus is the lower the serial the better your RGB output is quite likely to be.

    Also the Japanese models seem to have a higher standards than the US and EURO models.

    My model is in the 50,000's and on certain TV's with an RGB scart cable the picture is truly incredible, Blu-Ray and HD can go and **** themselves as far as I'm concerned.
     
  9. REXMONDAY

    REXMONDAY Rising Member

    Joined:
    Feb 28, 2007
    Messages:
    74
    Likes Received:
    0
    Thanks for the reply, i have a Japanese AES in the 30000 bracket so according to your article it seems I've been lucky and got one of the better RGB outputs. One day when I get my house finished /i'll try the AES out on the 47" and see what the quality is like :dance:
     
  10. Xian Xi

    Xian Xi Rising Member

    Joined:
    Jun 1, 2009
    Messages:
    72
    Likes Received:
    0
    That info needs to be clarified. The only differences you will see via the the Neo is the color brightness and saturation between the 2 revisions. You can easily remove the resistor and cap combo and use the suggested values by Sony on both input and output.

    A 3-6 needs to have 3 traces cut and removed to get rid of the striping effect.

    Also the most common picture problem is due to the Neo's refresh rate which is 59.18hz which some TVs dont like.
     
    Last edited: Jun 25, 2009
sonicdude10
Draft saved Draft deleted
Insert every image as a...
  1.  0%

Share This Page