LG LHD645 Service Manual

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ELECTRICAL TROUBLESHOOTING GUIDE
3B
System part OK.
Check IC108 / IC102 / IC105
and SMPS board.
Proper display
cable connect.
“LG Logo”
display on monitor
OK?
“LG Logo”
display on monitor
OK?
3A
IC108: 3.3 VA,
IC102: 5 V, IC105 : 3.3 V
OK?
Display
cable connection
OK?
NO
NO
NO
NO
YES
YES
YES
YES
YES
Replace X500.
Replace IC503
(SDRAM).
Replace IC500 MT1389
or IC102, IC105.
X500
27.000 MHz
OK?
Signal OK?
NO
NO
YES

LG LHD645 Specifications

General

Brand	LG
Model	LHD645
Category	Home Theater System
Language	English