Atari 2600

2600 Diagnostic Flowchart (Continued)
i
Are color bars
P
Are color bars
2
Yes
present? Yes properly adjusted? r
'See Figure 4-21.
(See Figure 4-2)
I No
b J
No 1
m
I
4
Is any other test
Check your
No
pattern on the
,Yes
switch settings.
screen?
I
J
Are they correct?
w
(See Figure 4-4,
4-694-9)-
I
A a w
Pg. 4-7
Is there "snow" No Is ANY
on the screw?
modulation
(no modulation) ~resent on screen? No
1
I Check VCS 1 w
connections
to
TV and
Test VCS with
known - good
battery eliminator.
Pg. 4-9
Pg. 4-1 1
I
IS "snow" on
screen gone?
Pg. 4-6
Yes
2600/2600A Domestic VCS