Atari 2600

Colored Screen Troubleshooting Procedure
Switchboard
Bad Switchboard
=?
Is +5v at JlOl
Pin I?
Pg. 4-17
4
Is RF mod. output
Tune RF mod.
If RF mod cannot be
tuned to 61.25 MHz No at adjustment tuned to 61.25 MHz,
(channel 3,+ .I5 hole.
replace it.
MHz)
B
b
Is video
signal pre-
sent at JlOl
pin 12?
Check for open trace
or bad connection be-
tween J2Ol and RF
module pin.
Repair,
Chdc for shorted trace.
If none is found, the
RF module is shorted
and must be replaced.
I
Pg. 4-2
Is JlOl pin
12 shorted to
ground?
P
2600/2600A Domestic VCS
I
. No
~efective 3101.
Replace