Sega Nomad recap

Januar 15th, 2018

Caps of the Sega Nomad needed to be exchanged. We used ceramics instead

look here before




and after



Atari 800 and Flash Cartridges

Januar 3rd, 2018

when using The!Cart or MyIDE II with atari you need to do a mod of some signals


Only Cut one circuit and add a wire and you are done

atari 800 solder side fix

UWRC NES PCB into a new NES Mini Controller

Dezember 12th, 2017

Today I tried to upgrade a new NES Mini Controller with the UWRC PCB from micro.

And it works great

uwrc_nes_mini_Controller (2)

left old uwrc Controller NES, right new NES Mini Controller

uwrc_nes_mini_Controller (3)

you need to remove this here and make the led hole bigger and as usual the opening for the usb connector for loading


Dezember 7th, 2017

Today I revived a the holy grail of PC Engine Hardware a PC Engine LT.

PCE_LT_ (3)

Only 5 screws and remove 3 ribbons you will get the main PC Engine Board

PCE_LT_ (11)

Because of its age the Caps are brocken and need a replacement.

After some exchange in the power area it works again :-)


PCE_LT_ (10)


look how bad it looks because of leaking caps





PCE_LT_ (8)


how ugly it looks. Some alkohol for cleaning



PCE_LT_ (6)



PCE_LT_ (5)


exchanging of most caps to kerkos



PCE_LT_ (4)


after recap

LT jailbarfix


jailbarfix too with replacement of 2 kerkos into: 4,7uF 16V or 25V





One Power Supply to rule them all

November 21st, 2017

For testing old Computers you will need a lot of different power supplys with AC and DC Voltage.

I put them together and we got one to rule them all ;-)
Meanwell RT-65B and a 9V AC Power Supply

9V /2100mA
5V / 5,0A
12V / 2,8A
-12V /0,5A

So it works @:

  • Atari 8 Bit Computer like 600XL, 800XL, 1200XL, 800XE, 64XE, 130XE
  • Atari 8 Bit Computer like Atari 400, 800, Atari 810, Atari 1050
  • Commodore C64, C16, C64C
  • Commodore Amiga 500,500Plus, 600,1200
  • Commodore CD32, Commodore 1541 II
  • Neo Geo 5V Unit

power_one_to_rule_them_all (8)

power_one_to_rule_them_all (7)

power_one_to_rule_them_all (5)

power_one_to_rule_them_all (1)

power_one_to_rule_them_all (2)

power_one_to_rule_them_all (4)

Neo Geo AES 3-4 RGB Bypass

September 14th, 2017

here you find the pics for rgb bypass for a neogeo AES 3-4 PCB with THS 3714 amplifier.

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

R1-R3 = 7.1k

R4-R6= 1.9k


NeoGeo X battery failure

September 14th, 2017

I was lucky to get a new NeoGeo X Console but the battery was brocken :-(


So i ordered a replacement and changed it …


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




and its working …

Raspi in a Stick

August 20th, 2017

raspberry modding is everywhere. So we put a raspberry in a NeoGeo Oldstyle Arcade Stick for presentation at GamesCom 2017, so the younger games can get in touch with the neo-geo Games and not only with the look. With the right feeling a original NeoGeo Controller

The position makes it possible to use the onboard USB Ports and  network connector.

First some dremel work to make it fit into the neogeo arcadestick case



then a hdmi slim extension and a usb cable


As the NeoGeo X Controller is a standard USB Controller it was possible to connect the usb part directly to one usb connector of the pi


in the future it could be possible to make the buttons directly to GPIO Ports

So it looks great



Atari 600XL RAM Ugrade to 64MB

August 10th, 2017

Its time to bring up this little beauty to the level of a Atari 800XL.

An easy mod, because all parts in a Atari 600XL are socket and you  only need to change 2 RAM Chips and do some wiring

Works with Pal and here shown NTSC Version

Remove U11 and U12 (was: TMS 4416-15NL 4bitx16k)

Replace with : MCM41464 AP10 (4bitx64k)
or : NEC D41464C-10 (4bitx64k)
OR : HMS50464P (4bitx64k)
or : any 4464 equialent (4bitx64k)

Wire Lifted DownSide R36 to Lifted U16 Pin 08

Wire Lifted U5 Pin 03 to U9 Pin 21 Dia Nearby

Wire Lifted U6 Pin 10 to U9 Pin 22 Dia nearby





Atari 800 RGB Mod via Sophia

Juli 13th, 2017

Atari 800 was my first computer after Sinclair ZX81 and its time to make the picture better. After checking the A/V Out it contains Video and S-Video in a good qualitiy. So i decided to replace the original DIN Connector and replace it with a DIN 13 like used in Atari 7800 french and Atari ST. I used some not needed pins from the Din 13 to put in Video and S-Video too. So its possible to use RGB-Output via a standard french Atari 7800 RGB Cable and with a special Cable made I can use Video and S-Video too via the same connector.

To put the DIN 13 in the right position i need some plastic and drilled holes downunder to make the Din connectors accessable


a800_sophia (5)

a800_sophia (6)

replaced DIN 5 to DIN13

a800_sophia (4)

downunder chaos

a800_sophia (2)

because of no space at the CPU Board I needed to move the Sophia Board to another place. I uses some ribbon extension like this

a800_sophia (1)

and here we go. In front you see incognito board too :-)

a800_sophia (7)

after finishing up it looks like this

a800_sophia (3)