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42PQ1100-ZE (CHASSIS:PD92A) - LG TV Service Manual (repair manual). Page 41

Read LG 42PQ1100-ZE (CHASSIS:PD92A) Service Manual online

Check  P1100 All
Voltage Level (17V, 5V)
Check Power connector
OK ?
Replace Power board
Y
N
Y
Check L1103 
Voltage Level 5V
Replace L1103
Y
N
Check IC1105 (pin2)
Voltage Level 3.3V
Replace IC1105
N
Check  IC109 (pin29) Output
Voltage Level (3.3V) 
Replace  IC109
N
Y
Making 
Revision 
2009. 2 . 1
1/14
PDP TV
Symptom
Power-Up Boot Fail
Page of 54
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