LG GB115 Service Manual page 52

Checking Flow
Check Voltage Level of
Check LED Component
(D501,D502,D503,D504,D505,R50
1,R507,R506,R508,R510,R513)
Change PCB
Start
TP1 = 2.8V ?
YES
YES
NO
Replace U505 or Change PCB
NO
52
Replace Component
(D501,D502,D503,D504,D505,R5
01,R507,R506,R508,R510,R513)