Archive for Dezember, 2009

Balltop with 5mm RGB-Led

Dienstag, Dezember 15th, 2009

I used a 5mm LED for RGB-Balltop of Sanwa Stick.

Advantage: more powerfull as the PLCC4 or SMD 605 Led

balltop, led, shaft

balltop, led, shaft

you have to remove the ring of the led

you have to remove the ring of the led

after removing the ring

after removing the ring

difference with ring and without

difference with ring and without

cutted legs

cutted legs

wires black is 5V, red, green and blue needs GND to lite

wires black is 5V, red, green and blue needs GND to lite

including shrinking

including shrinking

moved into shaft

moved into shaft

frosting the led for diffusing the light

frosting the led for diffusing the light

frosting led

frosting led

red

red

green

green

blue

blue

all leds on -> white

all leds on -> white

Atari Paddle repair/cleaning

Dienstag, Dezember 15th, 2009

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.

Retroadapter

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

good old atari 2600 paddles

paddle_cleaning_1

opening the clamps with a screwdriver

opening the clamps with a screwdriver

use isopropl alcohol for cleaning

use isopropl alcohol for cleaning

a teethbrush works good

a teethbrush works good

paddle_cleaning_5

Sega GameGear Audio & Display Fix

Mittwoch, Dezember 2nd, 2009

I received a GameGear without sound and the contrast of the handheld was terrible.

So I used a searchmachine and found the following sites:

AudioFix

For Display troube

If you don’t want to make it yourself, we can take care of your gamegear

Part  #1 Audio Fix

No Audio :-(

No Audio :-(

bad capacitor

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

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 marked capacitors

change the two red marked

change the two red marked

when soldering the new ones, look for space in the marked area

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.

gg1

gg_2_left

gg_3_right

gg_4_replaced_left

NeoGeo AES RGB-Fix

Dienstag, Dezember 1st, 2009

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!

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 revision of your neogeo board

use a flashlight to see the number

This can help too

Here you can see the Layout Revision

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

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

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

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

cuting rgb signal

You have to cut both sites to be sure.

cutting done

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

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