LG FH2 Service Manual page 27

ELECTRICAL TROUBLESHOOTING GUIDE
SYSTEM POWER SUPPLY ON SMPS BOARD
No Charge
Is VD(11 V-15.3 V)
normal?
Is CN1(10.5 V-14.8 V)
normal?
Is IC3 normal?
Is IC5 normal?
Is IC4 normal?
Is charge LED normal?
Charging
YES
YES
YES
YES
YES
YES
RED
NO
A
NO
Check F1, R6, R8 and replace it.
NO
Check IC3 and replace it.
NO
Check IC5 and replace it.
NO
Check IC4 and replace it.
GREEN
3-10
FULL charged.