LG RT-29FD40RX Service Manual page 13

Is the voltage at
each pin voltage of IC11
Check pin 60
No
Of IC11(H - Out)
Check &
Replace
IC11
Check Q402
Collector waveform
No
Check &
Replace
Q402
Check T401
& each pin voltage
No
Check &
Replace
T401
Check Q401
No
Collector waveform
Check &
Replace
Q401
Check & Replace
T402
NO RASTER
Normal
Yes
Check the
In/out of
regulator
(IC821, IC822
IC823, IC824
Yes
IC825)
Yes
Yes
Yes
CHECK B+
At D829 cathode
Abnormal
Check
Fuse of AC line
No
Check the Voltage
Of C803
Ok
Check the Voltage
Pin 4 of IC801
Ok
Check / Replace
IC801, IC802, IC826
No
Check Fuse and Rectifition Diode of
secondary Load of SMPS trans(T803)
Ok
Check / Replace
IC11
- 13 -
Open
Check / Replace
Ok
Fuse
No
140 ~ 310V
Check / Replace
DB801
No
18 ~ 20V
Check / Replace
Fuse IC801