I used a 5mm LED for RGB-Balltop of Sanwa Stick.
Advantage: more powerfull as the PLCC4 or SMD 605 Led
balltop, led, shaft
you have to remove the ring of the led
after removing the ring
difference with ring and without
cutted legs
wires black is 5V, red, green and blue needs GND to lite
including shrinking
moved into shaft
frosting the led for diffusing the light
frosting led
red
green
blue
all leds on -> white
One of my favorite console is the ATARI 2600 and the game Warlords. It needs paddles but after 20years the paddles jitter.
It is not new and not hard to do, but after cleaning you will have a lot of fun with games like Kaboom, Super Breakout, Warlords…
http://www.atariguide.com/help/care.htm
If you want to use the paddles with a windows PC with retroadapter. The paddle adapter will be available in 1-2 weeks.
If you can’t do it yourself, we can help
You have to open it and the poti inside . After cleaning with isopropyl alcohol and using contact oil, the paddles will run like at the first day 
good old atari 2600 paddles
opening the clamps with a screwdriver
use isopropl alcohol for cleaning
a teethbrush works good
I received a GameGear without sound and the contrast of the handheld was terrible.
So I used a searchmachine and found the following sites:
If you don’t want to make it yourself, we can take care of your gamegear
Part #1 Audio Fix
No Audio :-(
bad capacitor
In most cases it it this capacitor 47uF 6.3V (C7)
Please change 47uF 6.3V (C5) too, because if you make use of a headphone.
If you can’t find it with 6.3V you can make use of one with higher voltage.
replaced, audio is working great again
Audio Amplifier Board
| DESIGNATOR | VALUE |
| C1 C2 C3 C5 C7 |
100μ 6.3V 100μ 6.3V 100μ 6.3V 47μ 4V 47μ 4V |
Part# 2 Display Fix
The display was dark, the contrast wheel didn’t help, so I changed every elko on the mainboard. After this the picture was brighter and the contrast wheel works good again.
The original capacitors have some clue under it. Desolder one side of a capacitor and move it a litte bit. Then you can desolder the other site.
change the marked capacitors
change the two red marked
when soldering the new ones, look for space in the marked area
when soldering make space at the marked areas. It is needed when closing the gamegear.
Mainboard
| ONE ASIC GG | TWO ASIC GG | VALUE |
| C68 C43 C45 C55 C54 C48 C49 C1 C4 C14 C48 C11 |
C31 C49 C35 C45 C44 C38 C39 C1 C3 C14 C48 - |
100μ 6.3V 22μ 6.3V 4.7μ 35V 0.47μ 50V 0.47μ 50V 68μ 6.3V 100μ 4V 33μ 6.3V 10μ 6.3V 10μ 6.3V 10μ 6.3V 10μ 6.3V |
Update: Bad Contrast Fix for other GameGear Revision
Here you can see all capacitors to be replaced.
Responseable for the bac contrast are: C54,C55,C48,C49 (blue marked Area). But its better to replace all to be sure.
The newer Revision 5 or 6 of Neo Geo have bad RGB-Output Signals. It looks like a grid layed over the picture.
We can take care of the RGB-Fix if you are not able to do it by yourself
left site: verticallines, right site: OK!
To remove the vertical lines you can do the RGB bypass I found here.
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
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
