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26LN45XX, 26LN4503, 26LN450B, 26LN450U, 26LN4573, 26LN4575, 26LN457B, 26LN457U (CHASSIS:LC31A, LD31T) - LG TV Service Manual (repair manual). Page 15

Read LG 26LN45XX / 26LN4503 / 26LN450B / 26LN450U / 26LN4573 / 26LN4575 / 26LN457B / 26LN457U (CHASSIS:LC31A / LD31T) Service Manual online

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TROUBLE SHOOTING
1. No Power
Check  C820 All
Voltage Level (19V)
Check Power connector
OK ?
Replace Adapter
N
N
Check IC802 output
Voltage Level (12V)
Replace IC802 &
Recheck
N
Check  IC809 Output
Voltage Level (3.3V_ST) 
Replace  IC809
N
Y
Check  IC810 Output
Voltage Level (2.5V) 
Replace  IC810
N
Y
Y
Y
Y
Check  IC807 Output
Voltage Level (1.5V) 
Replace  IC807
N
Y
Check  IC806 Output
Voltage Level (1.15V) 
Replace  IC806
N
Check X201 Clock
24MHz
Replace X201
N
Replace IC100 Flash Memory
Y
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