Star Tech Journal

Issue: 1981-August - Vol 3 Issue 6

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MARCH '81
Midway "Galaxian" Substitute +5v Regulator •
Atari "Battlezone" Control Handle Mod • Gottlieb
New System 80 Service Manual • Midway "Pac-
Man" Ram/Rom Location Code • Atari "Missile
Command" Power Interrupt Mod • Atari "Battle-
zone" Random Score Problem • Gottlieb Auxiliary
Lamp Driver Board • Microprocessor Trouble-
T shooting (Part 3) • Midway "Pac-Man" Degree of
Difficulty Mod• Atari "Battlezone" Aux PCB Mod•
Stem "Berzerk" Service Notes • Cinematronics
"Star Castle" V3 Roms • Atari "Asteroids" Switch
Maintenance • Rowe/AMI Turntable Maintenance
Tips
APRIL '81
Midway "Rally-X" Test Mode • "Big Computer" in
one chip • Seeburg "SMC 1," "SMC 2" Potential
SPKR Damage• Williams General Illumination Mod
• Midway"Rally-X" Monitor Fuse Rating• Midway
"Pac-Man" Cocktail Table Static PCB • Early
Warning (Field Maintenance Tips) • Rowe/AMI
Number Conversions• Exidy "SPECTAR" Program
Update Mod (11 A-1 to 11 A-2) • Williams C8363
Master Display Board Troubleshooting Procedures
• HVL Circuits-Atari "Missile Command" Color
Monitors
MAY '81
Williams Service Notes • Midway "Rally-X" Static
PCB • Centuri "Phoenix" Options • Exidy Color
Board Ribbon Cables • Updating Older Rowe/AMI
Phonos to Contemporary Prices • Midway "Pac-
Man" Joystick Modification • Signature Analysis
(Part 1) • Atari "Missile Command" Diagnostic
Tests• Rowe Bill Changer Modifications• Gottlieb
Coil Chart
JUNE '81
"Repair of Rock-Ola Dollar Bill Programmers" •
Midway "Galaxian", "Pac-Man" Substitute +5VDC
Power Transistor• Centuri "Phoenix" Modifications
• Midway "Gorf' Program Change• Early Warning
#2 (Field Maintenance Tips) • Signature Analysis
(Part 2) • Stern "Berzerk" Credit Accumulation
Checklist • Stern "Berzerk" Joystick Mod Kit •
Suggested Game Improvements • Color to B&W
Converter CKT • Texas Instruments Power Semi-
conductor Catalogs
JULY '81
Atari "Asteroids Deluxe" Program Change Kit •
Stern "Berzerk" Joystick Adjustment • Rowe 44 7
Product Price Upgrading • Stern "Scramble" Power
Supply Modification • Gremlin "Astro Blaster''
Audio Modification • Wiring Diagram for Wico
Manual/Remote Volume Control • Gottlieb Reset
Modification • Taito "Crazy Climber'' Joysticks •
Signature Analysis (Part 3) Williams "Defender''
System Summary• Midway "Pac-Man", "Rally-X"
& Gort Anti-Static Cleaner Application • Williams
"Black Knight" Service Notes• Loss of All Coils on
Bally Pins • Atari "Asteroids" Troubleshooting Tips T
• Stern Joystick PCB Troubleshooting Tips
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CENTURI
"PHOENIX"
UPRIGHT
MODIFICATION
Modification for C.P.U. Board
When Using - G07 - Electrohome
Symptom:
Touchy horizontal hold, screen dis-
torted in upper right hand corner,
second player score digits will not
straighten up.
Fix: Make changes on C.P.U. board
as per steps 1 & 2 below.
1. Cut trace on pin #5 on IC-22.
Connect jumper to pin 5, other
end to+s volts.
2 1 Cut trace to pin #12 on IC-
23. Connect jumper to pin 12,
other end to pin #11 on IC-19.
AUGUST 1 9 8 1 ' ~
15
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: INVADERS
., REVENGE

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Just when you thought the battle was over, we introduce Invaders Revenge
and the challenge continues. Invaders Revenge is a super new game developed
in England. After months of highly successful collections, Universal Amusement
Distributors purchased the exclusive manufacturing rights in the United States.
The game centers around different groups of Invaders trying to destroy your ship.
Their patterns get increasingly more difficult to destroy, especially when they
start shrinking and swelling .
Be on guard for Invaders sneaking down and stealing your fuel cells.
If they're not destroyed before reaching the top of the screen they fuel the
mother ship which will start moving back and forth, firing fast missiles at you .
If it's necessary to go around another object, hold your fire button and your ship
thrusts upward. If you are successful you'll have the chance to maneuver your
ship into position to dock with your base for bonus points and fuel before you
resume battle. But watch out, this time as you shoot the invaders, they will
randomly fall toward your ship.
Add new life to Space Invaders (Reg. & D/L)
Simple installation
Exciting new sounds
Kit comes with new game board, program chips, new main plexi and control
panel, plus easy instructions


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TO ORDER:
SEND CHECK OR MONEY ORDER IN THE AMOUNT OF
$550 .00 FOR EACH KIT. C.O.D. ORDERS WILL BE
CHARGED $10.00 EXTRA FOR SHIPPING.
MAIL TO:
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Universal Amusement Distributors
115 Kingfield road
Philadelphia, PA 19115
OR CALL David Gilfor AT 215-684-1600
(Immediate shipment available.)
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