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4 Troubleshooting
4-2 Checkpoints by Error Mode
4-2-1 No Power
LAMP off, power indicator
LED red color?
Yes
Does proper Satand-By DC
A5V appear at C127
Does proper Main DC B12V,
B5V, B12VS appear at C104,
BD105, C119?
Does proper Inverter DC 24V
appear at CNM801 in SMPS
Yes
Does proper DC
A3.3V,A1.8Vappear at C126,
C156?
Yes
Does proper DC
B9V,B3.3V_8202/B3.3VD,
B2.5V_8202 appear at
C103,C132, C145?
Yes
Does proper DC 5V, 3.3V,
1.8V appear at C811, C853,
C833?
Yes
Does proper DC B3.3FB,
B1.2FB, B1.8VD appear at
C179_FBE, C182_FBE, C159?
Yes
Does proper DC B3.3VD
appear at D8014?
Yes
A power is supplied to set?
4-2
No
Check a connection a power cable.
P/N : BN39-00802A
BN39-00802B(40")
Change the Main Power Ass'y
26" : BN44-00156A
32" : BN44-00156A
40" : BN44-00167A/00165A
No
Check IC104, IC107 Change the
Main Ass'y
No
Check a IC809, IC802.
Change a main PCB ass'y.
No
Check IC101, IC105, IC106 Change the
Main Ass'y
Check IC110_FBE, IC111_FBE, IC109
No
Change the Main Ass'y
No
Check IC8001
Change the Main Ass'y
Check a other function(No picture part)
Replace a LCD Panel
No
26" : BN07-00254A
32" : BN07-00385A
40" : BN07-00387A
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