One Point Repair Guide; Booting When You Turn The Unit On - LG DP132 Service Manual

1. NO BOOTING WHEN YOU TURN THE UNIT ON
When you plug power cord and turn the unit on, LED light won't turn red, the unit won't
read disc nornally.
1-1. Please check every output voltage.
1) Please check if output voltage 3.3 V from main board Q4 C polarity is normal.
If output voltage 3.3 V is not normal, please check the working status of SMPS board.
2) Please check if output voltage 5 V from main board XP9 pin11 is normal.
If output voltage 5 V is not normal, please check the working status of SMPS board.
3) Please check if output voltage 1.2 V from main board Q5 C polarity is normal.
If output voltage 1.2 V is not normal, please check the working status of main board Q5.
XP9

ONE POINT REPAIR GUIDE

Q5
< Main Board Top View >
Q4
3-2