Star Tech Journal

Issue: 1982-January - Vol 3 Issue 11

S*TJ JANUARY 1982 7
AMERICADE AMUSEMENT INC. • 2009 OLD CUTHBERT ROAD • CHERRY HILL, NJ 08034
(609) 428-3869
All kits are guaranteed for 30 days after date of shipment.
tlE.'IJ
SPACE INVADERS CONVERSION TO SUPER SPACE WARS
Conven your Space Invaders from the same old redundant game into an
interesting sped-up version with new exciting features.
I. Laser base fires 3X faster and aliens drop more bombs
2. Aliens have different shape from original game
3. Enter your name for high score on 1st screen
4. Screen two enters like Deluxe with thumping audio and stops just
above laser bunkers
5. Screen three enters like Deluxe except Aliens don 't move left to right.
You must knock out bunkers and aliens while a visual timer allows you
90 secs or you're dead
6. Improved sound
7. There's more but Good Luck!
TOUGH GAME-SORRY KIDS
To order: Specify TMS2716 (Triple Supply) or 9316 Roms in your
Mother board. Rather than re-strapping your M.B . we will ship
exact replacements for your installation ease.
Price: $200.
N
E.~LAXIAN CONVERSION TO UNION WARS
Galaxian is a great game, but by changing the memory you can make another
great game-Union Wars. Union Wars has four different screens; each one
more challenging than the one before.
Screen # I-Aliens, in vivid color, fly and drop bombs.
Screen #2-Flying saucers materialize, fly at high speeds and drop bombs.
Screen # 3-Queen Alien hovers, bombs, and discharges Alien Warriors with
laser spears.
Screen #4-Star Base Mother Ships hover while striking at your rocket.
• Easy to install on Galaxian PCB.
• Consists of two plug-in memory boards.
• Price: $27 5 ea. 3-5 $250.
ASTEROIDS ACCU·SHOOT KIT
Convert any Asteroids Video Game into a much faster skilled game! The little
flying saucer presently appears on the screen shooting at your ship with good
accuracy. Now make that saucer shoot with very high accuracy! Stop them
from waiting to get 1,000 points time after time. This kit prevents extremely
high scores and increases operator collections.
Asteroids Accu-Shoot Kit-02 Version-$50.
Asteroids Accu-Shoot Kit-01 Version (on the memory chips they are
stamped 01 or 02)-$75.
• Easy installatiorr-just remove existing memory and plug in Accu-Shoot Kit.
• Increases collection by 30%.
• Stops players from hanging on game.
• Route collector can install in minutes.
• Increases player excitement with new challenge.
GALAXIAN SPEED UP KIT
Installing this kit increases the speed of your rocket from left to right, but also
makes the enemy fly faster, there are more of them, and they shoot faster.
Suddenly the rate at which you're playing is twice what it used to be. The
enemy is all over the place and there are more flying in their formation. Plus,
when their leader flies at you he is shielded by twice as many red ships as before.
It is a contest of real skill.
Galaxian Speed Up Kit-$90




Easy installation-just plug in memory chips.
Increases collection by over 50%
Adjust number of milliles from I to 5.
Creates whole new challenge in the game .
POWER SUPPLY
Many operators are converting games today. They buy logic boards and color
monitors to install in older cabinets but discover they have power supply
requirements that cannot be met. This power supply is the operator's answer. It
develops the following voltages:
• 5 volts DC 3 amps ( 5 amp optional)
• 12 volts DC I amp
• 5 volts DC I amp
• Price $80.
SPACE INVADER CONVERSION KIT
Convert just about any Midway Video Game made from Gunfight on. The kit
includes a new game P.C.B., memory chips, control panel buttons and control
panel overlay with installation instructions.
Now, make use of equipment that was just about worthless and transform it
into a winner! You can never have too many Space Invaders at the cost of this
kit! Convert now for tomorrow's collections.
Space Invader Regular Kit-$400.
Space Invader Deluxe Kit-$430.
SPACE INVADER SPEED UP
Speed up any Regular or Deluxe Midway Space Invader with this module. The
Invaders move much quicker, drop bombs much faster and the laser base fires
faster. The game play is faster and is much harder to play. Now only the super
skilled player can hang on the game and even then it's super tough.
• Plug in module.
• Nothing to solder.
• Quick installation.
• Price 1-4 pcs-$45. 5-9-$42. 10-25-$40.
STAR CASTLE SPEED UP
Are your players hanging on the game and racking up very high scores? Are
your collections dropping because of it? Now speed up the action with this
memory change. Make the game tougher for that experienced player without
hurting the newcomer.
• Unplug four memory chips.
• Replace with new memory.
• Price: $SO.
ASTEROID CONTROL PANEL REPLACEMENT OVERLAY
Asteroid Control Panel Graphics do not last as long as the High Collections.
That is why you should replace your worn out Graphics with our new
Replacement Overlay. Easy to install. Remove Player Buttons, peel backing
off. Overlap Graphics, press down and you're done. Overlay is made of Heavy
Vinyl-the same type used on police cars with adhesive. Built to last and in the
same colors as original. In stock- immediate delivery.
Prices: 1-3 $15. 4-7 $13. 8-10 $12.
11-20 $10,
S*TJ JANUARY 1982 8
Operators!
Mechanics!
Are you searching for a
painless way to upgrade
your ability to repair the
Electronic games you
operate ... the games you
depend on for your
livelihood?
Randy Fromm's Arcade
Schools offers 46 hours
of comprehensive, practi-
cal training in electronic
amusement repair for
mechanics and operators.
You don't need an
oscilloscope ... to be
successful at repairing
Solid-State games. The
course stresses the
efficient use of test
equipment like the Logic
Probe
and
Digital
Multimeter; relatively in-
expensive equipment that
operators and mechanics
can easily afford.
Is the course expensive?
Not really. The tuition fee
of $400.00 includes over
$75.00 worth of textbooks,
databooks, and other
materials.
Randy Fromm's Arcade
School will not teach you
how to repair a jukebox,
electromechanical pinball
or vending machine. You
will learn about diodes,
transistors, power supplies,
electronic pinball, video
games (including a special
session on video games
that use the X-Y monitor
system), cross referencing
semiconductor replace-
ment parts, using a logic
probe, and more.
San Diego Arcade School
6123 El Cajon Blvd.
San Diego, CA 92115
714/286-0172
Dallas Arcade School
11857 Judd Ct.
Dallas, TX 75243
214/231-3307
CROWBAR PROTECTION
FOR
* WILLIAMS * "DEFENDER" * RAMS
BY DANIEL ZAVARO, S.F . MUSIC & GAMES, SAN FRANCISCO, CA
In recent months, I have repaired four "Defender"
video games which had serious damage to RAM
memory chips. In each case, ALL TWENTY-FOUR
RAM chips were destroyed!!! These 4116 memory
parts cost $5 to $6 each. I built a crowbar protection
circuit to protect the RAM. It consists of a 13 volt Zener
diode (SK3788) which triggers an SCR (SK3685)
rated at 8 amps. When the supply voltage exceeds 13
volts, the Zener diode begins to conduct, which turns on
the SCR. This quickly blows the 4 amp slo/blo fuse
(labeled F 3 ), thus removing all power from the RAM
chips. I built this circuit on a small square of perforated
board and installed it near the power supply. (See Fig.
1.)
A second method for RAM protection is simpler but
probably not as effective. Locate the 12 volt (regulated)
supply wire. It is pin 5 of Power Input connector 1J3.
Simply install a 0.6 amp slo/blo fuse in series with this
supply wire. The RAM chips normally consume about
0.5 amps. My guess is that the power supply voltage
slowly increases above 12 volts. This may be due to
temperature effects on the regulator chip (IC2, 723)
and/ or on the series
+12V
(FIG. 1)
P.S. o - - - - - - < - - - - - - - - e - - - , , +12V
pass transistor
RAM
SK3685
(Ql, 2N4075). If
100
so, the 0.6 amp fuse
will provide some protection
½W
for all those expensive RAMs. -=- -=-
EXIDY
"TARG" JOYSTICK* SUGGESTION
BY TODD ERICKSON, SUMMIT AMUSEMENT, ST. PAUL, MN
"Targ" is basically a good game that is getting very little
play. A simple physical examination of the joystick will
explain why. Many of the older games never had a
decent joystick. I installed a 4-way Wico on my "Targ"
and the income went up substantially. A few extra
dollars spent to modify this game will greatly increase
the profit.

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