LG GB175 Service Manual page 57

4.7.2 Circuit Diagram
4.7.3 Checking Flow
Check C506 (TP11)
Check Voltage Level
(TP10) = 5V ?
Check J201 (TP12)
Change other LCM
then to double check
TP11
Start
soldering
YES
of C507
soldering
Yes
No
Change PCB
NO
Re-solder C506
No
Replace U502 or Change PCB
No
Re-solder J201 or Replace a new one
Yes
Change LCM
-57-
TP10