P800 Pin #7~#10
Voltage Level = 5V ?
P800 Pin #2
Voltage level = 5V ?
Check Power connector
OK ? Replace Power Board
YES NO YES
P800 Pin #13, 14 = 12V
P800 Pin #17, 18 = 24V ?
NO
Replace Power Board
YES
NO
Replace MAIN B’D Q801
MAIN B’D L803 = 3.3V ? Replace MAIN B’D IC801
YES
NO
MAIN B’D L813 = 1.26V ? Replace MAIN B’D IC805
YES
NO
MAIN B’D L805 = 3.3V ? Replace MAIN B’D IC806
YES
NO
Check MAIN B’D X100 Clock
12MHz Replace MAIN B’D IC100
YES
NO
Replace MAIN B’D IC102
NAND FLASH
YES
Replace MAIN B’D IC103
Serial Flash
NO Replace MAIN B’D
IC300, IC301 DDR2 Memory
NO Replace MAIN B’D IC100
NO

Making

Revision

2009. 2 . 1

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LCD TV Symptom Power-Up Boot Fail

26~42LH2000

32~47LH3000/LH4000

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