LG Flatron T711B Service Manual page 24

IC401 Pin 18 waveform is
5
18
waveform is right?
19
waveform is right?
Q706 base, collector
20 21
waveforms are right?
Check if DC voltage of
6
wave is Variable.
Waveforms
5
20
Q706, Base
7. H_Deflection Failure
right?
YES
Q719 drain
YES
Q705 drain
YES
8. Invariable H_Size
IC401 PIN 35
18
IC401, #18
21
NO
NO
NO
NO
NO
19
Q719, Drain
6
Q706, Collector
- 24 -
1. Check IC401 Pins 39,40,41
2. Replace IC401.
Check Q720,50V LINE
D710
Check Q704
Check 13V line.
Check and replace T703
and Q706.Check DY connector
connection.
Check and replace IC401.
Q705, Drain
IC401, #35