Troubleshooting - Samsung LE26A41B Service Manual

5 Troubleshooting

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