Atari CX - Page 65

Snowy Screen Troubleshooting (cont.)
If Pin 3 VR2 short to ground:
1
Possible short in chips. Remove
m
Is there +5v on the
output of
VR2?
chips one-by-one and turn on unit.
If modulation occurs, bad chip has
been located. If chips are not
shorted, check for possible
CAP or
trace shorted on board.
CX 5200 Field Service Manual
If you are servicing a unit containing
PCB CA020108, chip designators
have
been changed from U to A.
Repair
0 r
Replace
I
Yes
2
Open Pin 3 VR2 to
VCC2, +5B or +5F.
J b