DOWNLOAD LG 55LK530 (CHASSIS:LT03B) Service Manual ↓ Size: 4.56 MB | Pages: 72 in PDF or view online for FREE

Model
55LK530 (CHASSIS:LT03B)
Pages
72
Size
4.56 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lk530-chassis-lt03b.pdf
Date
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LG 55LK530 (CHASSIS:LT03B) Service Manual ▷ View online

Check RF Cable & Signal
Check Tuner 3.3V Power
L5105
Replace L5105
Check Tuner 1.26V Power 
IC5103  2pin : 1.26V
Check IF_P/N Signal
TU5101 17/18 Pin
Replace IC5103.
Check Tuner 5V Power
L5101, L5103
Check IC507
Check  BCM LVDS Output
Replace  or BCM( IC101) or Main Board.
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC507
No
Bad Tuner. Replace Tuner.
Replace L5101, L5104
ok
2. Trouble shooting - No video (Digital TV video)
3. Trouble shooting - No video (Analog TV video)
Check RF Cable & Signal
Check Tuner 3.3V Power
L5105
Replace L5105
Check Tuner 1.2V Power 
IC5103  2 pin : 1.2V
Check CVBS Signal
TU5101 11 Pin
Replace IC5103
Check Tuner 5V Power
L5101, L5103
Check IC507
ok
ok
ok
ok
ok
No
No
No
No
No
Replace IC507
No
Bad Tuner. Replace Tuner.
Replace  L5101, L5103
ok
Check BCM LVDS Output
Replace BCM( IC101) or Main Board.
4. Trouble shooting - No video (AV)
Check input signal format.
Is it supported?
Check AV Cable for damage
for damage or open conductor
Check JK1105 , JK1102 CVBS Signal Line
ƒ Rear AV : R1140 
ƒ Side AV : R1136
ok
ok
ok
No
Replace Jack
ok
Check CVBS_DET Signal
• Rear AV Detect : R1129
• Side AV Detect : R1113
Replace R1129 or R1113
No
No
Check  BCM LVDS Output
Replace  LGE35230( IC101)
or Main Board.
Check input signal format.
Is it supported?
Check Component Cable
for damage or open conductor.
Check JK1105
Y/PB/PR signal Line
ok
ok
ok
No
Replace Jack
Check COMP_DET Signal
Replace R1114 or R1130
No
ok
No
Check BCM LVDS Output
Replace BCM( IC101) or Main Board.
5. Trouble shooting - No video (Component)
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