LG SPJ2B-W Service Manual

3-6
SMPS POWER CIRCUIT
YES
YES
YES
YES
YES
YES
YES
YES
No 3.3 VA
No 1.2 VA
Check 3.3 VA network, the device
a short circuit will cause no output.
Check 1.2 VA network, the device
a short circuit will cause no output.
Check SMPS.
Check SMPS.
Replace IC101.
Replace IC102.
Check IC100.
Replace IC100.
NO
NO
NO
NO
NO
NO
Check FB100 voltage 23 V.
Check FB100 voltage 21 V.
Check IC101 voltage 3.3 V.
Check IC102 voltage 1.2 V.
Check IC100 voltage 5 V.
Check IC100 voltage 5 V.
ELECTRICAL TROUBLESHOOTING GUIDE

LG SPJ2B-W Specifications

General

Brand	LG
Model	SPJ2B-W
Category	Speakers
Language	English