Atari 2600

2600A Bad Video Troubleshooting (Loss of Sync.)
(Revisions 14 and up)
Tune R F module.
I
b
T
b
3.5-5V P-P signal Yes Defective R217 or '
on A201 side of R217.
defective CR203.
or defective A20 1.
d
R F module tuned to No Can R F module be No
6 1.25 MHz, Channel 3 ;' ' properly tuned? Replace R F module.
I
Swapout
1) A201
2) A200
3) A202
-
Good video:
+
Yes
Defective
R221 or R23(
Yes -,
2600/2600A Domestic VCS