Play Meter

Atari videos:
Teaching an old dog new tricks
3 . Jump D2 pin 11 to 7408 pin 1.
4 . Jump D2 pin 12 to 7408 pin 2 .
5 . Jump 7408 pin 3 to F3 pin 4 .
Want to add a new twist to an old
game? Improve the image or re -
sponse? The following list contains
modifications for game improve -
ment designed to increase player
appeal.
Modifications should be perform -
ed with the logic board removed
from the game to a suitable work
bench , and using the proper tools to
avoid possibly damaging the PCB .
Disable missiles during attract
mode :
1. Clip and lift B8 pin 8 .
2 . Jump B8 pin 8 to E8 pin 4 .
3 . Jump D8 pin 8 to E8 pin 5 .
4 . Jump E8 pin 6 to trace going to
B8 pin 8 .
Pong
Conversion to 50-cent game (1 or 2
plays) :
To center the game and remove
curve at top of net :
1. Clip and lift pin 12 on chip A4 .
2. Install a 7427 JC on board . Chip
may be glued to existing chip in
piggyback fashion . (G2 another
7427) .
3 . Connect pin 7 of 7427 to ground .
4 . Connect pin 14 of 7427 to + 5
volts .
5 . Jump F9 pin 8 to 7427 pin 1.
6 . Jump F9 pin 9 to 7427 pin 2 .
7 . Jump H5 pin 6 to 7427 pin 13 .
8. Jump 7427 pin 12 to D1 pin 9 .
9 . Jump Dl pin 8 to lifted pin 12 on
A4 .
Pong Doubles
To remove
side :
1. Cut and lift
2 . Jumper H6
3. Jumper H6
4. Jumper H6
extra paddle on left
Anti Aircraft
1. Add a 7474 at location A8 on
PCB .
2 . Jump A8 pin 2 to A8 pin 6 .
3 . Jump A8 pin 5 to A8 pin 12 .
4 . Jump A8 pin 1 to A8 pin 13 .
5 . Jump A8 pin 3 to A8 pin 11 .
6 . Jump A8 pin 4 to A8 pin 10 .
7 . Cut and lift F8 pin 9 .
8 . Jumper F8 pin 9 to A8 pin 3 .
9 . Jumper D8 pin 9 to A8 pin 1.
10 . Jumper E9 pin 1 to A8 pin 8 .
11. Jumper A8 pin 4 to 1K resistor
located between IC's D7 and C7 .
(Run jumper to end of 1K closest to
C7 pin 5 , not to the + 5 volt buss .)
12 . Change D5 (IN 914) to a 1 uf
electrolytic capacitor (+side to E9
pin 8) .
Steeplechase
pin
pin
pin
pin
10
11
12
13
on Hl.
to Fl pin 13 .
to F1 pin 6.
to H6 pin 6 .
Super Pong
To remove paddle on right side :
1. Perform modification as listed for
centering the game on Pong.
Elimination and Quadrapong
To make ball travel at full speed
constantly :
1. Clip and lift E2 pins 8 and 11 .
2 . Jumper the traces going to E2 pin
8 and 11.
3. Jump traces to 5V pull -up resistor .
Pursuit
To double plane size :
1. Clip and lift K5 pins 4 and 2 .
2 . Jump C1 pin 9 to K5 pin 2 .
3 . Jump E4 pin 5 to K5 pin 4 .
Qwak
Decrease shot size by 112:
1. Add a 7408 piggyback on board .
2 . Clip and lift D2 pin s 11 and 12 .
To make the game time 60
seconds :
1. Solder bridge the split pad labeled
" 2M" located between H3 and J3 .
2 . Clip and lift H3 pin 6 .
3 . Jumper H3 , pin 6 to the end of
the 1K resistor closest to J3 pin 1.
To make the game time 120
seconds :
1. Jump split pad labeled 2M .
NOTE : Game is normally ]lf2
minutes long .
Tank
To make tank shell shoot around
corners:
1. Clip and lift pins 1 and 2 on chips
M2 and M4 , and after shell is fired , if
tank is rotated , the shell will move
with the tank rotation .
To charge tank playfield :
1. Short D9 pin 6 to ground .
Tank-19-inch Monitor
T o minimize playfield flutter :
1. Install 2000 uh inductor across
R54 (39 ohm) on TV PCB . (This will
parallel the existing 2000 uh induc-
tor) .
If this does not solve the problem
and an adjustment of the Vertical
Hold does not minimize the problem ,
perform the following :
1. Clip and lift B11 pin 6 .
2. Jump B11 pin 6 to B7 pin 11 .
3 . Jump B14 pin 3 to B7 pin 13 .
4 . Jump B11 pin 11 to B7 pin 12.
Trak 10 and Formula K
To change Race Track display :
1. Clip and lift L5 pin 13 .
2. Jump L5 pin 13 to a 1K pull -up
resistor .
3 . To delete slick - cut C2 pin 4 and
video resistor .
Formula K
Automatic Track change with free
play :
1. Jump K8 pin 2 A1 pins 11 and 12.
2 . Jump K8 pin 5 from cut trace
running from L5 pin 13 .
Twin Racer/ GT 20
Track change :
- There are three pads next to chip
A3 .
- Using the center as common point
jump to ground side to change
tracks .
To improve steering response on GT
10, 20, Twin Racer and Formula K:
Trak 10 , Formula K:
1. Clip and lift A4 pin 13 .
2 . Clip and lift A4 pin 11 .
3 . Clip and lift A4 pin 12 .
4 . Tie A4 pin 12 to a 1K pull -up
resistor .
5 . Jump A4 pin 11 to J8 pin 6 .
6 . Jump A4 pin 13 to H1 pin 8 .
Trak 20 and Twin Racer - Digital
Board :
1. Clip and lift C10 pin 12 and tie to
1K pull -up .
2 . Clip and lift C10 pin 11 and
jumper pin to trace going to C 10 pin
12.
3 . Clip and lift D10 pin 2 and tie to A
1K pull -up .
4 . Clip and lift D10 pin 3 and jumper
pin 3 to trace going to D 10 pin 2 .
5 . Clip and lift C10 pin 13 and D10
pin 1.
6 . Jump C10 pin 13 and D10 pin 1
to L7 pin 8 .
Watch for AMOA review .. .
coming up in PLAY METER