Samsung LE26A41B - Troubleshooting

5 Troubleshooting
LE26A41B/LE32A41B 5-1
5 Troubleshooting
5-1 No Power
Does proper DC 12V
appear at C812, C813, C814?
Change a Assy PCB Power.
(BN94-00443F)
Yes
Yes
No
Check a connection a power cable.
(BH39-10339H)
No
Does proper DC A3.3V,
A5V, A1.8V appear at
C873, C861, C884?
Check a IC816, IC814, IC818.
Change a main PCB ass'y.
(BN94-00539A)
Yes
No
Does proper DC 5V, 3.3V,
2.5V, 9VS, A1.8V appear at
C831, C835, C850, C895, C884?
Check a IC811, IC812, IC813, IC606,
IC818. Change a main PCB ass'y.
(BN94-00539A)
Yes
Does proper DC 33V,
1.2V_SNI_D, 1.2V_SNI_PLL,
3.3V_SNI_D, 3.3_SNI_PLL,
+3.3V_MD, +2.5V_MD1,
MDIN_APLL, MDIN_DPLL
appeart at C827, C865, C878,
C551, C570, C416, C429,
C447, C451?
Check a IC812, IC815, IC817, FT522,
FT512, FT406, FT407, FT410, FT411.
Change a main PCB ass'y.
(BN94-00539A)
Yes
A power is supplied to set?
Check a other function.
(No picture part)
Replace a lcd panel.
(BN07-00121A)
No
No
No
LAMP off, power indicator
LED red color?