S~R-TECH _ _ _ _ _ _ _ _ _ _ 3
Atari "Missile Command" Cocktail Modification
WARNING! There may be a hazard of electrical
shock at the black posistor just above the focus
adjustment knob at the right-hand side of the
monitor chasses (as viewed from the rear). To
avoid this potential hazard, the posistor should
be relocated away from the focus control in the
existing hole as shown. Use the same screw
(screw will form its own threads).
Please take care to ensure that this
modification is implemented as soon as possible.
This affects Missile Command Cocktails from
S/N 001-449, 453-455, 462-464, 468 and 681.
RELOCATE AT THIS
POSITION
FOCUS ADJUSTMENT KNOB
Midway "Galaxian" Problems and Solutions
QUICK REFERENCE OF PROBLEMS+ SOLUTIONS
SYMPTOM
No Video
Aliens Break Up
Picture Breaks Up
Galaxip, Letters Break Up
Stars Flash or are Missing
Blows Fuses
Lines in Picture (Colored or Black)
Lines through Attackers
Bad Ram 2 on Screen
Bad Rom on Screen
Tilts Itself (Resets)
Garbage on Screen
No Sound
POSSIBLE SOLUTION
Power Supply
2101
2101
2101
74LS164
Power Supply
27LS00,93411,82S16*
27LS00,93411,82S16*
74C245**
Rom Card
Rom Card
Rom Card
1877, .1 uf Cap. (LM 377)
LOCATION
4F/5F
4F/5F
4F/5F
1A/1 B
1 N-1T
1 N-1T
9B/5J**
7F-7L
7F-7L
7F-7L
11A, C26
The table shows~
of the most common problems
and probable trouble areas.
Use this table for quick fixes
and reference to problem
areas only.
*All the same type of part
located at 1 N-1 T with heat
sinks glued on.
**7 4C245 is a Bi-Directional
bus driver. Some boards
have 2-821 6's as bus
drivers. In this case, the
problem probably lies
somewhere else.