a lot of wires…

loading connector with led

light up when pressing

or all four leds permanent on

gunlord wireless with neogeo stick

No more bad pictures and no more jailbars with perfect picture level thanks to arcade-tv

R1-R3 = 7.1k

R4-R6= 1.9k

So i ordered a replacement and changed it …

Look at the blown up original battery (never used, brocken, crazy)

done

and its working …

-cut left side of the three 6,8k resistors for input rgb input of ths amplifier

-cut the left side of the three 75 ohm resistors for output to the din 8.1

-cut BF for sync output to the din 8.1

the perfect voltage divider values for bypass PCB :

R1,R2,R3=7,51k

R4,R5,R6=2,29k

@ AES 3-5 Mainboard Pin 3 Comp Video and Pin 7 C-Sync are the same on both you will get Comp. Video.

After the modification its is neogeo conform Pin3 comp. Video and Pin 7 C-Sync comming from the THS RGB Bypass PCB

For some help of solder side

cable wiring

removing the original controller

some dremel work

wiring of uwrc

I used a 200mAh Lipo and changed the loading current to 50mA via changing loading R from 10k to 20k

loading led, usb port, lipo

done

here you can see the adhesive mod of a MVS two Slot System in „NeoGeo Style“:

PS: Great background

They have a lot of scratches and as I am not a friend of black – I prefer WHITE – like the great PC-Engine one of my favorite Consoles. I make use of white spray on a good old NeoGeo AES.

After some spraying it looks like this:

more pictures:

A great Idea, and some dremel work later…

Nothing new for me. The Buttons in the oldstyle Boards are the same as the NeoGeo Reset Button.
I done this mod weeks ago.  Some RGB-LEDs and Resistors and done…

If you can’t do it, we offer this service:
http://www.wolfsoft.de/shop/product_info.php/products_id/14793

Video:

I done some upgrade and make the lights switchable.

I am using a analog switch MC14551B to make three modes possible

a) lights off

b) Light on button press

c) all lights on

I am using a NEOGEO AES3-5 unit for the switchless mod today

Rom Part: piggyback

I added a second Bios from Razoola the UNIBIOS. You can get it at www.wolfsoft.de or unibios.free.fr

Here you can find a good tutorial for piggyback the UNIBIOS http://www.mmmonkey.co.uk/

First you have cut pin 2 of the onboard Bio and lift the pin up:

use a DIP 40 socket to make a future replacement easier

Lift up pin 2 of the mainboard and pin 2 of the DIP-socket

The PIC 16F630 Part

As usually I am using the switchless mod from seb http://seb.riot.org/saturnmod/

And the inspiration from Pete Grimes Site: http://www.mmmonkey.co.uk/

This time I can’t use sebs pic code „out of the box“.
I have done some lite modifications to the code.
50/60Hz switching is inverted at the NeoGeo and NeoGeo can’t switch between 50/60 Hz during operation. So it is needed to do a reset after switching 50/60Hz.

The Country Mode must reduced from 3 to 2 and I have done some slight changes for make a RGB-LED working. The difference at the RGB-LED it is wired common Anode

You will find the source code here.

PIC 16F630 Wiring

red wire PIC Pin 1 (5V) taken from IC HC04 Pin 14

black wire PIC Pin 14 (GND) taken from IC HC04 Pin 7

red wire PIC Pin 5 to RGB-LED (Resistor 150Ohm)

blue wire PIC Pin 6 to RGB-LED (Resistor 150Ohm)

yellow wire PIC Pin 8 to lifted Pin 2 of the DIP-socket

blue wire PIC Pin 10 to lifted Pin 2 of the onboard Bios

white wire PIC Pin 11 to solder site of mainboard (Reset Signal)

pink wire PIC Pin 12 to PAL Jumper right site (LSPC2-A2 TSOP Pin 64)

grey wire PIC Pin 13 to solder site of mainboard (Reset Button)

remove the pal jumper, solder pink to the right site of the jumper

(left site of PAL1 5V, right site to LSPC2-A2 TSOP Pin 64 for 50/60Hz definition)

Here you can see the lifted pins

on the solder site you have to cut one circuit (see red marked area) and solder grey and white

(to split the original Reset Button Signal and make use of the Reset Button via the PIC)

complete mainboard top site
The black wire at the RGB-Led under the Reset Buttons is carrying 5V and taken from a nearby IC

Now you have to add the RGB Led to the power switch, with help of a dremel.

I done it the same way as pete from www.mmmonkey.co.uk

For more power I am using now a RGB-Led with black wire common Anode 5V

english video

german Video

left site: verticallines, right site: OK!

To remove the vertical lines you can do the RGB bypass I found here.

JammaNation X

mmmonkey

NeoGeo Forum

First you have a look into your neogeo to see if you have one of the „bad“ Revisions.

use a flashlight to see the revision of your neogeo board

use a flashlight to see the number

This can help too

Here you can see the Layout Revision

Part #1

Removing Capacitors, Resistors and replaceing with 3 75Ohm Resistors

Remove the 4 capacitors and 3 resistors

You have to remove the four marked capacitors (red,green,blue,yellow) and the 3 Resistors (red,green,blue).

After this it looks like this

removed capacitors and resistors

Now you have to reconnect the rgb Signal via 75 Ohm Resistors.
I am using some shrinking tube look here.
The Sync Signal (yellow) doesn’t need 75 Ohm you can wire it directly

3 resistors and sync wire

Part#2

directly at the other side of the mainboard you find the crystal (the cause of the problem)

you have to cut of the rgb-signal in this area, so the crystal can’t sending bad signals into the rgb-wires.

cuting rgb signal

You have to cut both sites to be sure.

cutting done

cutting done

After further reading the links above, it seems to be allright if you only do Part#2.
When I will do the next neogeo I will check it and give this site an update, because I done first Part #1 and the picture was quite better. After doing Part#2 I didn’t saw any better picture.

Part #3  50/60 Hz

If you have a Pal Revision all games running at 50Hz you have to cut of the connector between the pal jumper.

The following picture is showing a NTSC Console.

Here you can see a NTSC Console in 60Hz Mode the 0 Ohm Resitor gives GND to Pin64

Pin 64 of the nearby chip LSPC2-A2 9305 E27 sets 50 or 60Hz.

GND at Pin 64 -> 60Hz
5V at Pin 64 -> 50Hz