37LG30 (CHASSIS:LA85D) - LG TV Service Manual (repair manual). Page 15

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C
2008
- 15 -
TROUBLESHOOTING
Power-Up Boot Fail
Check  P700 All
Voltage Level (5V, 12V, 16V)
Check Power connector
OK ?
Replace Power board
Y
N
Check IC704 #2 Pin
Voltage Level 2.6V
Replace IC704 &
Recheck
Y
N
Check X100 Clock
12MHz
Replace X100
Y
N
Replace IC103 Flash Memory
Check  Q706 Output
Voltage Level (12V or 5V) 
Replace  Q706 & Recheck
N
Y
Y
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