Twin (Intruder / Crash)

  • Manufacturer: Shoei
  • Year: 1979

Useful info

  • Cabinet type: Cocktail
  • Measures (WxHxD): 86,5 x 64,0 x 56,5 cm
  • Working voltage: 220V
  • Maximum consumption: non disponibile
  • Technology: Vertical color raster monitor
This cabinet has a double game: INTRUDER and CRASH, the title can be selected from a special knob until the game has started. INTRUDER is the SEGA version of Space Invaders with the UFO at the end of the level that wanders around the screen, while CRASH is HEAD ON with the machine running through a maze trying to clean it out of the “dots” while an “enemy” car turns in the opposite direction looking for a frontal collision.

This rare cabinet was manufactured  under license by SHOEI for the Japanese market with the aim of proposing two very famous games in the same cabinet. Mount a modified card that allows you to have two romset simultaneously. The two control panels have been reproduced while the rest is original and well preserved.

Yet another Japanese Cocktail

16 June 2015

Wiz (www.tilt.it) gave me this not working cocktail after a glorious period in his pinball arcade room. It is Japanese and supports 2 games: CRASH and INTRUDER.

  • CRASH is HEAD ON (sometimes just named Crush)

  • INTRUDER is SPACE ATTACK (I didn’t verify the ROMS but the UFO in the end of the level has the same behavior of my SEGA/GREMLIN Space Attack)

PC board is very similar to the original Sega/Gremlin hardware used for both games but supports 2 ROMsets Using a switch you can select one game or the other. This selection is functional during attract mode and credits but not during the match.   The game was a bit dirty but in general good conditions.

 
Instructions are in Japanese 🙂

Opening the box…

16 June 2015

Opening the cocktail I found everything in quite good conditions. On the top the 2 sound boards, on the right the power section and on the left the PCB.

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Here is a good image from the top:

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Power section and PCB


This is the PCB in its definitive position without the monitor.


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Boards

16 June 2015

These are some pictures of the boards Main board:

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One detail:

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CRASH sound board:

The games

16 June 2015

I could repair the board very easily. It had some oxide and the switch power supply had to be regulated. Some issues still remain on both sound boards. Monitor is bright :O  

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You can select the games through this switch.
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And these are the 2 games.

Crash
Intruder

CPO

16 June 2015

Both CPOs were in bad conditions so I disassembled the metal plates at first.    

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Then I scanned both plates

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  …and a friend of mine printed the result on vinyl…

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Then I removed all irregularities from the metal plates


and this is the result

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The result

16 June 2015

Here is the cocktail after cleaning and some troubleshooting

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Troubleshooting the sound boards

16 June 2015

CRASH sound boards had both “strikes” always on. I studied the schematics

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but I didn’t find anything wrong. Then I understood that I had less than 12V and the difference was enough to cause this malfunctioning. I changed 2 resistors: R64 from 10K to 18K R67 from 10K to 18K in this way the circuit can tolerate less than 12V.   About INTRUDER sound board: some sounds were missing and backtracking them I understood that a couple of LM3900 were faulty… This is one of the pages of my troubleshooting diary ahahahah

twin_diary