LG FH2 - Power

3-12
ELECTRICAL TROUBLESHOOTING GUIDE
2. NO POWER
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
YES
Turn ON/OFF Switch on (ON).
END
Check IC11.
Check Y2.
Check IC104.
Check SW5, JACK2.
1. Check SMPS board CN1 output.
2. Check Battery damage.
Check SMPS board.
Check IC9.
Check IC103, IC105.
NO
NO
NO
NO
NO
NO
NO
NO
Check voltage 11~15 V
in JACK4 pin5(AC/DC).
1. Check connection Status on SMPS board CON1
and MAIN board JACK4.
2. Check connection Status on SMPS board CON4
and MAIN board JACK8.
Check L29(over 5 V).
Check Y2 crystal operation.
Check IC104 status.
Press STANDBY(SW5) button,
check JACK2 pin4(0 V).
Check voltage over 11 V
in JACK4 pin4(BATT).
Check L33(1.2 V), L34(3.3 V).
Check L341(133 MHz).