Atari 2600 Field Service Manual page 55

*Caution:
Observe
polarity of
continuity
checker. Do
=put
+
probe on ground.
Snowy
Screen Troubleshooting Procedure,
Motherboard, (Continued)
I
Is there
W
Is there an
continuity open trace on
between +5V either +5v
line and ground?* or ground?
I
I
Yes
No
1
Check for and
repair any shorted
traces
or solder
bridges.
&
h
b
No
'
Yes
I s there Replace connector.
,
I
Is modulation
continuity evident on
across J201
i
the
screen?
Pins 1,3,6,
10,l l ?
Is modulation
the TV screen?
Pg.
4-2
Check for and
rtplace shorted
.
I
caps: ~ 2 0 4 , ~ 0 1 , ~ 2 2 0 ,
C239,C200,CZl'l.
I
I s modulation
evident on
the
screen?
Pg.
4-1 1
Y e s
Pg.
4-2
2600/2600A Domestic V C S