LG Flatron F720B - Troubleshooting: Vertical Deflection Failure

CHECK
IC601 PIN 7 (45V)?
CHECK
IC401 PIN 33, 34
(SAWTOOTH WAVE)?
CHECK
IC601 Pin 3 (13V) ?
- 22 -
4. NO VERTICAL DEFLECTION
NO V-DEFLECTION
(ONE HORIZONTAL LINE)
NO
NO
NO
TROUBLE IN
IC601, V-CIRCUIT
TROUBLE IN
T901 13V Line
TROUBLE IN
T701 40V line
TROUBLE IN
IC401
YES
YES
YES
98
Waveforms
IC401, #33 IC401, #34
8 9
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