Space Invaders Part II repair

 Space Invaders Part II, Technical Info  Comments Off on Space Invaders Part II repair
Aug 192012
 

I’ve just recieved a Space Invaders Part II, which was thought to have a PCB fault.

On powering up the cab I observed the following conditions:

1) Very faint looping UFO sound
2) Monitor Neck Glow
3) Nothing on screen

The first thing I did was check the voltages on the “G connector” on the PCB.

I set my multimeter to 20v DC and measured ground (Pins 1,2 or 3) and Pin 5 (or the blue harness wire). I expected to get around 12v. I got 12.1V

12v

12v – Space Invaders Part II

I measured ground (Pins 1,2 or 3) and Pin 7 (or the grey harness wire). I expected to get around 18v. I got nothing!

18v

18v – Space Invaders Part II

I measured ground (Pins 1,2 or 3) and Pin 9 (or the red harness wire). I expected to get around 5v. I got nothing!

5v

5v – Space Invaders Part II

I measured ground (Pins 1,2 or 3) and Pin 10 (or the white harness wire). I expected to get around 0v. This is the Power-on-Reset signal, and should be close to 0v for the game to boot. I got nothing!

0v

0v – Space Invaders Part II

So, my conculsion was that I had some kind of power issue, and my attention turned to the Power brick. With the cab switched off, I put my mutimeter on continuity and checked each power brick fuse.

Powerbrick

Powerbrick – Space Invaders Part II

Fuse 1 – Continutiy
Fuse 2 – Continuity
Fuse 3 – Continuity
Fuse 4 – Nothing!

Luckily I had a spare slow blow 5A fuse that I could replace the fault one with.

I powered up the cab and voila, we have a working game!

Working SI

Working Space Invaders Part II

Retro Games Party 4.0 – The Return To The Arcade

 Arcade Info  Comments Off on Retro Games Party 4.0 – The Return To The Arcade
Aug 192012
 

Many thanks to James (RGP) for inviting me to his Retro Games Party last night. I had a great time and it was good to catch up with some familiar faces, and meet some new arcade enthusiasts. Here are a couple of pictures I took below:

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

RGP 4.5

Some videos that have been posted on YouTube:



Arcade Manuals

 Technical Info  Comments Off on Arcade Manuals
Aug 162012
 

PCB:

Space Invaders Part II Color:

Space Invaders Part II Color Manual (10 downloads)

 

Tehkan World Cup Service Manual:

Tehkan World Cup Service Manual (37 downloads)

 

Midway Space Invaders Manual:

Midway Space Invaders Manual (12 downloads)

 

Atari Dunk Shot Operators Manual:

Atari Dunk Shot Operators Manual (22 downloads)

 

Monitor:

CM-R14 Manual – Space Invaders Part II:

CM-R14 Manual – Space Invaders Part II (18 downloads)

 

Links to other manual websites:

http://arcarc.xmission.com/
http://pdf.textfiles.com/manuals/ARCADE/