Improve RGB signal in the first gen AES (NEO-AES) motherboard

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OKI

Kabuki Klasher
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With the kind suggestion of Xian Xi, I post here a guide to improve the rgb
first version of the motherboard neogeo (NEO-AES).

Frontsostituzionecondensatoriprimaversoneschedaneogeo.jpg


You should see 6 capacitors in a row in the top left corner. You do not change the first one which is 10uf. You change the other 5 100uf capacitors to 470uf 16v ones.

this will further improve the already good signal rgb on board
 
Xian Xi

Xian Xi

JammaNationX,
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Make sure you add the pics after the update. If you still want to do the RGB bypass I can show you how as well.
 
O

OKI

Kabuki Klasher
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Sure! I add the pics after the update. Yes please show me the procedure of bypass, so everyone can see.
 
Xian Xi

Xian Xi

JammaNationX,
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The easiest way to do the RGB bypass is to remove the RGBS capacitors, they are #2-5 of the 6 capacitors from left to right. Then you just solder a wire from each top hole of the capacitor place and then solder the other side of the wire to the corresponding signal for that pin.

I'll post a pic later.
 
O

OKI

Kabuki Klasher
Joined
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Posts
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Xian Xi said:
The easiest way to do the RGB bypass is to remove the RGBS capacitors, they are #2-5 of the 6 capacitors from left to right. Then you just solder a wire from each top hole of the capacitor place and then solder the other side of the wire to the corresponding signal for that pin.

I'll post a pic later.[/QUOTE

Sounds Good :)
Click to expand...
 
F

F-zero

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I would also remove the resistors on the rgb lines and place them in the scart lead instead.
This allows you to experiment with different resistors without worrying about the console.
I had to drop the resistors down to 37 0hms to brighten the picture to the point where i was happy.
The early revisions like the one i have produce dark rgb because the resistors are to strong for the signal.
 
thegreathopper

thegreathopper

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I just carried out the RGB bypass mod bypassing all resistors and removing 4 caps, (RGB and Sync) but the picture was too bright and the picture rolled,

I then put the resistors back in circuit as the picture link above... thanks Xian Xi :-) and the picture is now great... plugged into a B&O MX4000 version 3.1

Thanks Guys.
 
thegreathopper

thegreathopper

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Forgot to mention my mod is on a version one NeoGeo, the RGB picture was ok before the mod just not bright enough for my liking.

Now the colours pop :A: :B: :C: :D:
 
T

theboy995

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hello everyone, I have an AES with a serial 10.xxx daughter board which the image is somewhat dark and reading I see that I would only have to change these capacitors marked in red of 100uf for ones of 470uf, would that be correct? Or would I have to do something else? I love her too much to break her, thank you!!!


E34779AD-55BB-4225-850F-BE73A5699575.jpeg
Xian Xi said:
The easiest way to do the RGB bypass is to remove the RGBS capacitors, they are #2-5 of the 6 capacitors from left to right. Then you just solder a wire from each top hole of the capacitor place and then solder the other side of the wire to the corresponding signal for that pin.

I'll post a pic later.
Click to expand...
 
Neo Alec

Neo Alec

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For those using a Framemeister, just updating the A/D level is usually enough.

For everyone else, I can see how you may want to do it.

Are you talking about the power daughterboard with a voltage regulator on it, or the video daughterboard with a clock crystal?
 
T

theboy995

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Neo Alec said:
For those using a Framemeister, just updating the A/D level is usually enough.

For everyone else, I can see how you may want to do it.

Are you talking about the power daughterboard with a voltage regulator on it, or the video daughterboard with a clock crystal?
Click to expand...
my board has both things on the daughter board

4D5492D2-31BE-4DBC-BB6A-41AF7226B050.jpeg
 
Neo Alec

Neo Alec

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That's the video board. To improve the RGB, you should remove it and just move the crystal to the main board.

Question about video problem on 5V AES (NEO-AES with daughter board)

Hi all, I encountered a video problem on the AES console, part of the screen is distorted. Remarks: 1) Use original PSU 5V3A 2) Use composite output 3) The console works fine during gameplay (no such distortion) 3) The game works fine with another 5V AES on the same TV 4) The cart slot is...
www.neo-geo.com
 
T

theboy995

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Neo Alec said:
That's the video board. To improve the RGB, you should remove it and just move the crystal to the main board.

Question about video problem on 5V AES (NEO-AES with daughter board)

Hi all, I encountered a video problem on the AES console, part of the screen is distorted. Remarks: 1) Use original PSU 5V3A 2) Use composite output 3) The console works fine during gameplay (no such distortion) 3) The game works fine with another 5V AES on the same TV 4) The cart slot is...
www.neo-geo.com
Click to expand...
thanks for the quick response Neo Alec

I did a test disconnecting the cable with the white connector to see how it would look, but the machine didn't even turn on, I imagine that board gives some energy too?

my rgb is good, but it looks a little dark, I don't need to just put the 5 capacitors of 470uf?
 
M

maki

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theboy995 said:
the image is somewhat dark
Click to expand...
If anything the first model should be too bright, thats because they've used 68Ohm resistors instead of 75Ohm resistors (just nes tot the caps you've mentioned.

Whats cable are you using?
Cheap ebay cables will have components in them, when they shouldn't, thats going to make a dark picture.

The daughterboard mentioned is about improving the Composite Video, but sacrificing the RGB quality for it.
You could remove it by placing the crystal on the mainboard form the daughterboard, that will work, as was already mentioned by @Neo Alec
 
T

theboy995

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maki said:
If anything the first model should be too bright, thats because they've used 68Ohm resistors instead of 75Ohm resistors (just nes tot the caps you've mentioned.

Whats cable are you using?
Cheap ebay cables will have components in them, when they shouldn't, thats going to make a dark picture.

The daughterboard mentioned is about improving the Composite Video, but sacrificing the RGB quality for it.
You could remove it by placing the crystal on the mainboard form the daughterboard, that will work, as was already mentioned by @Neo Alec
Click to expand...
Thanks Maki, well, it's not too bright, I have a 3-5 and it shines brighter, I use the rgb cable from retrogamingcables uk with csync, the rgb, as I say, I see well with sharpness and color, but as I comment, the image is somewhat dark, so if I changed the capacitors 100uf for those of 470uf would improve the brightness? thanks a lot
 
Neo Alec

Neo Alec

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theboy995 said:
Thanks Maki, well, it's not too bright, I have a 3-5 and it shines brighter, I use the rgb cable from retrogamingcables uk with csync, the rgb, as I say, I see well with sharpness and color, but as I comment, the image is somewhat dark, so if I changed the capacitors 100uf for those of 470uf would improve the brightness? thanks a lot
Click to expand...
Is the 3-5 modded? The mod instructions most follow provide a very bright picture.
 
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