Front Circuit - LG LAS350B Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

2. FRONT CIRCUIT

Is the Digitron on correctly?
YES
POWER ON.
YES
LED DISPLAY
correctly?
YES
Check if all
buttons are ok?
YES
Check if the remote
control is ok?
YES
Front B/D ok.
NO
Refer to SMPS part.
NO
Check if
CON301 is ok?
NO
Check if the front
1
power is ok?
NO
2
Check if IC301 is ok?
Check pattern and resoldering
3-8
NO
YES
NO
YES
NO
Reconnect it.
Check power supply circuit.
YES
Refer to SMPS part.