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4 Troubleshooting
4-1 No Power
LAMP Off, power indicator
LED red color?
Yes
Does proper Stand-by DC 5V
appear at C144?
Yes
Does proper Main DC
B13V,B5V,B12VS appear at
C103,C113,C117?
Yes
Does proper Inverter DC 24V
appear at CNM802 in SMPS?
Yes
Does proper DC A5V,A3.3V
appear at C144,C140?
Yes
Does proper DC B9V, B8V,
PANEL_VCC,B3.3V_1
appear at C106, C107,
C121,C131?
Yes
Does proper DC
MEM1.8V appear at C232,C230?
Yes
Does proper DC 2.5_IO,
B2.5V_MSTV appear at
C450, C1225?
Yes
A power is supplied to set?
No
Check a connection power cable.
P/N: BN39-00802A
Change the Main Power Ass'y
No
32": BN44-00156A
40": BN44-00167A
46": BN44-00168A
No
No
No
Check IC106, IC107
Change the Main Ass'y refer to Partslist
No
Check IC100,D100,IC101,IC103
Change the Main Ass'y refer to Partslist
No
Change the Main Ass'y refer to Partslist
No
Check IC401, IC1200
Change the Main Ass'y refer to Partslist
Check a other function (No picture part)
No
Replace a LCD Panel refer to Partslist
Check IC203
4 Troubleshooting
4-1
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