LG Flatron T711B - High Voltage Failure

Q706 collecter waveform
is right?
15. High Voltage Failure
NO
NO
Replace T701
Check Q719,Q720
Check 50V line
Repeat the troubleshooting
Guide of H_deflection failure.
YES
YES
16. ABL Failure
YES
NO
Check and replace CRT
Input full white pattern to monitor.
Check P302, D801,
R801~803, R798.
Check and replace IC302
Check and replace T701
NO
YES
- 28 -
Q719, Drain Q706,Collector
IC302 Pin22
input exists and varies
with different patterns?
T701 Pin 6 Voltage exists?
18
18
Waveforms
21
21
YES
waveform is right?
Q719 drain